If the north poles of two bar magnetsa 0vj)i pla07b are brought close to each other, the magnets wil i)70 lapvbaj0l

  If the south pole of one bar magnet is brougob gduf )m,6r8ht near the north pole of a second bar magnet, the two magnets wil fg8bmo,ud r6)l

  If a bar magnet is d(d qsr85 igjwk*rwpl/wv24p8 ivided into two equal pieces,

  The Earth's geographic North Pole is magt3 vdt8xtd0) inetically a

  The south pole of a magnet points toward cgkqw.qs2 1vxf57;b-*gnbj m the Earth's

  An electric current produces*v+ bkoc;*hy5q bp)jj

  Which of the following is c x 62vk(5fjgpak74 e3d1vtve5c p n4hcorrect?

  A vertical wire carries a current straight down. To the east of +o)yksy*r g q,this wire, the magnetico*), ygk qyrs+ field points

  A horizontal wire carries a current straight toward you. From your poiz-wrg fhh7xy+yasb22ynwxbh 8+ k ie4x 1)6;int of view, x2 w) hrgbx1sb2 fe+6yhzy nay i xk-i8w+;h74the magnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. When viewed fgc oj19fhzpw1r ai2-0rom above, the current moves around the loop in a counterclockwise c1or-zg20 ja h9pwif1sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a fsi)3 mj cv(z((* 0ti,ozuszgtable top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this cuvc)im*, 3 tj(zz 0(ssoizu(gfrrent, inside the loop? The magnetic field

  The SI unit of magnetic field is th:r na.xlkqp 54gqb*4b6dv u:ie

  1 T is equivalent tomah ynsk,9p 8q)i *vr0

  The direction of the force on a current-carrying wire in 0dar a i.g anfb /./:2fftz:csa magnetic field is described by which of the followd.i/n c2/: 0sfff:at gba.rz aing?

  The force on a current-carrying wire i/qbv ;.o g2gl mw:9yrcn a magnetic field is the strongest when

  The force on a current-carrying gk3tdznkt .w7/9td2 owire in a magnetic field is equal to zero when

  A vertical wire carries a current straight up in a fo4x-uexpys0 t-q20vregion where the magnetic field vector points due north.-v2 x- t0u40 sqxofeyp What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magne4yd f/2uj ppr3)(icn xtic force. From this we can conclude tha2rx 4nyuc) (dp/ 3fpjit

  A charged particle moves with a constant speene97 hahm a .l13bi+nmd through a region where a uniform magnetic fie1e3n.lnb7mh+mih 9 aald is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle moves across a constant magneout.q1fq to33n(v mhrol0m9;+nbi w5tic field. The magnetic force on thhom1w+( q3 m no9ibv lno .trf;u05t3qis particle

  A charged particle is inject) w yph0h4y frda2bj h1m3v0t3ed into a uniform magnetic field such that its velocity vector is perpemd2w0y vf3tpa hy)r0h4 1hjb3ndicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular path in a uniform m r-g/:zbk;uj dx(u7ne agnetid7:b g -;nj /zu(erxkuc field. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular pzb5i0 j911+t.q2hd5s mo zkssow* qx uath in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of the circular path woul*9iqjho btd z0.o 2z5+mqskx1us 5w1sd have been

  At a particular instant, an electron me +jdch,zh(.ooves eastward at speed V in a uniform magnetic field that is direct,+co.ej (dhhz ed straight downward. The magnetic force that acts on it is

  An electron has an initial velocitywth zkhpo; )38j(r azgda;tr /x2i+px )i*y -d to the south but is observed to curve upward as the result of a magnetic field. The direr/+(a3wrxt g 2)txd)phpz8hj*a y ii;o;kd-zction of the magnetic field is

  An electron moving along the +x axis enters a region wher f i gejh*s:z0;jgcd28e there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? ( zc;se80ggj: 2j* hdif+x to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight c6css7tnaf+ z fub:c;1urrent-carrying wire is

  At double the distance from a long cu se0*im ,pdg(hrrent-carrying wire, the strength of the magnetic fg mie *hd(,p0sield produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry id0)f/ x 3qbf )cmqqowo:entical size currents in opposite directions. The wire on your right carries current toward you,f0oqwq q/o :x))fbmc 3 and the wire on your left carries current away from you. From your point of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side t6 okxbpes k3/b6k sfr)ai56 (on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between the two wirset rk (bk65 iopf/x6)as63k bes

  Two long parallel wires carry equal st.l aqry*8b+bm i y;bsmzm:7j y00 dc(u(q-l currents. The magnitude of the force between the wicjy7y8m (l zb+i0-q;smq0 dbryl:ms.(autb *res is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?

  A long straight wire carries current tojq kaok1 5t)) .+4oo3owmgwffward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the force on )jo gow4ow t.fkkam+3foq51) the proton?

  A wire lying in the planedoa*v40*g w*amd w0uc :pocu + of the page carries a current toward the bottom of the page. What is the direction of the m*+vmd0cg 4p:*ad0 awco owuu*agnetic force it produces on an electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires a.gp wi6 gm)v,nre placed side-by-side on a horizontal table. If the wires carry curren6 g.w),nmpvgit in the same direction,

  Two long parallel wires are placed side-by-side on a horizontal.j hch9js8 qg4yb .q)q table. If the wires carry current q8s .hc49qq.bjy)jhg in opposite directions,

  Consider two current-carrying3rwb *rrld;x 1 circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius b*l;r1xrd 3 wrof the other. Compared to the magnetic field at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carryingt .cwol*-;,5+tn zr -c vmkuybo0 iev- circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of , -t n o-i-o*.b0vc mert; wc5zlu+vkythe other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop ow v9:1cqvdbtrx84a6haw2srq g3 3zw *ccurs when the angle between the loop's magnetic moment and the magnet98z*4rbq6a3r:vwsxv ag1 h2wt w3qdcic field vector is

  When placed askew in a magnetic field, a current carry9o;h5tb b uz/ning loop that is free to rotate in any otn 9/zh 5ubb;direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric 1q/k(oj +xz t+tlgg)e tbs i * zz/xz:a(qx)/lmotors?kt+zl x +:l*ztqxeao)sq)zi x/j1 z/(gb(/t g

  A circular wire loop lies sivveh x2a-h1m/6vc lb9 9(lxin a horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north and dips below the horizontal. Which side of the coil tends to lift off of the table because of the torque caused by the currents interaction v9mhxs 6-(2xv el lh9bi acv1/with the magnetic field?

  In a mass spectrometer a particl8iw zqq5 (qv3he of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular path of radius R. The magnetic field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mass of the particle in te qwq5z8 qv(h3irms of B, q, V, and R.

  A velocity selector consists of a ch -ci(i 7frgj(earged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocity will move in a straight line. In the following, disregard tiig- ( c7je(frhe magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.60 A is oriented parallel to t4 914,wy-jzumet.vinpp w/ qa uniform magneticwp.wtuvi mj e1/,49 4 ty-npqz field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10xbzpnry673nh+dgng 6c m2*t - A in a direction of $30^{\circ}$ with respect to the direction of a 0.30-T magnetic field. Find the magnitude of the magnetic force on a 0.50-m length of the wire.

  What is the force per meter on aqqiv) 9skbt50 straight wire carrying 5.0 A when it is placed in a magnetic field of9s5vkb)0 q qti 0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long hfuvun r*,-agi c x *;e/mq3/ )y1tjdupas a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnitx )qv-* /u,udmfa*/gc;1 yjp e 3runetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field of 0.20 T. Wha:k5 v+ic:n5n 7k,xvkvhz bxr) t is the magnitude of the magnetic force on the proton?kk 5 xx)r+cv:i,vz:7bvhnkn5

  A proton moving at $4.0 \times 10^4 \; m/s$ horizontally enters a region where a magnetic field of 0.13 T is present, directed vertically downward. What force acts on the proton?

  An electron moves with a speeg+h r shzruu2 2o4e4is8z36hue0t de+d of $5.0 \times 10^4 \; m/s$ perpendicular to a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the electron?

  A proton travels at a speed cask l4f, +n;iof $5.0 \times 10^7 \; m/s$ through a 1.0-T magnetic field. What is the magnitude of the magnetic force which acts on the proton if the angle between the proton's velocity and the magnetic field vector is $30^{\circ}$?

  An electron travelingxib b;62esvauh(0 :n1yi e6vg due north with speed $4.0 \times 10^5 \; m/s$ enters a region where the Earth's magnetic field has the magnitude $5.0 \times 10^{-5} \; T$ and is directed downward at $45^{\circ}$ below horizontal. What force acts on the electron?

  An electron moves with a5v9y.uiyn hy7 speed of $8.0 \times 10^6 \; m/s$ along the +x axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of $60^{\circ}$ to the +x axis and lying in the $xy$ plane. Calculate the magnetic force of the electron.

  An electron moves with mpla4sk .xh4dsr-1vew, (i- va speed of $8.0 \times 10^6 \; m/s$ along the +x axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of $60^{\circ}$ to the +x axis and lying in the $xy$ plane. Calculate the acceleration of the electron.

  A proton has a speed ohu04uc -(cu94:6v l b oosfzadf $3.0 \times 10^6 \; m/s$ in a direction perpendicular to a uniform magnetic field, and the proton moves in a circle of radius 0.20 m. What is the magnitude of the magnetic field?

  A very long straight wire car 1 :pdnxc01dnzht:;gv-+l 2b:yn0eed tcin1zries a current of 25 A. What is the magnitude of the magnetic field at a distanc+2z:ny10t :gd0 vinblnzd-dxhceencp t; 1: 1e of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fi0i4yj rs n0wkt3rf :v/7krz4reld at the ground, 10 m r47knv f yk0rz043i wst:r j/raway?

  How much current must fldjf5dph uxh g8al3sz,xg 8s7s-w 0 g5 t09*kvuow for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire cak9rhw.un/ddtseomha. :/ t7,l gz) 94/ qwo ecrrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the s sdezd7/ uoqct4wnhw/)k.or9t,./mhg :l 9ea trength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite diktho hff /od)5k0tt , jdb3 8i7sjzy(:rections. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a pb(tyf idj3hjfzk t78o):/ okdh 5s,0toint that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in oppositr j*sux0 -/(uld-h..3obygawtjj6xw e directions. The w3rugw j/tux -ls-hdo.w0a(y 6b*xjj . ires are separated by 0.20 m. What is the magnetic field midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in eydo+7l o: r2do+,. 9qzcmblx(1mrn nopposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions fme (o,lo r9x2 rbl7.n+y nd1+d:cqmozrom the two wires the same?

  Four long parallel w8s. -rad7e80-sr 9bnhpadgip ires each carry 2.0 A in the same direction. They are parallel to the z-axis, and they pass through the corners of a square of sih s rpe- dignp 7.s88-09dabarde 4.0 cm positioned in the x-y plane. What magnetic field does one of the wires experience due to the other wires?

  Two long parallel wires carry currents of 5.0 A and 8.0 A in t-/d5nm 2dtc2z(p9:v0hk qgodmqqu1x12h eui he opposite direction. The wires are separated by 0.30 m. Find the magnetic force per unit length between the tq 1hc 9ddh:m 5-kp(guqevtqnu21/ o2xi zdm20 wo wires.

  What is the magnetic field at the center of a circular loop of wire of radiox7szuj(g4* f w x(vq.b)nzc: us 4.0 cm when a current ox:4*zq x wou(n7v.sgfbzj)( cf 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns o ly gr/u.g26laisd61yf wire. What magnetic field is produced at the c1/gigr6 .6alysd ly2uenter of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A. Wha8;+ 5opvu vio6kt6utrt strenguurkp8to6 vio+ ;v65 tth of magnetic field will it have at its center?

  How much current must pass throughq 54g-w/miqkv ndseijuy:v1 cx54 f5 0 a 400 turn coil 4.0 cm long to generate a 1.0-sgi xu4vin05mvf-wq/ dkq55cj1:4y eT magnetic field at the center?

  How many turns should a 10xw 4k xgva/a 4i+p90gkgqf x/)-cm long solenoid have if it is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop of 120 turndmx umu.k- 5sh(b z3vj n,g61eyar8-js that carries 6.0 A if its dimensions are 4.0 cm x 8.13hd xj6e5jrazun( vu gy,k- -ms.8b m0 cm?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fiecgc m2fo-8gh itp9/t :p8-ip lld of 0.30 T. The current in the loop is 2.0 A. What is the mil/f2 g o--gicp9mht8pp:ct8agnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire of cross-secmt, ftzwe 7km-a*2 sx; yuc4io 9*ssg-tional area $0.12 \; m^{2}$ consists of 200 turns, each carrying 0.50 A current. It is placed in a magnetic field of 0.050 T oriented at $30^{\circ}$ to the plane of the loop. What torque acts on the loop?

  A circular loop carrying a current of 2.0 A is in a a 54mhp d9r2bpmagnetic field of 3.5 T. The loop has an amp5p4 hrbd2 a9rea of $0.12 \; m^{2}$ and its plane is oriented at a $37^{\circ}$ angle to the field. What is the magnitude of the magnetic torque on the loop?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic fieldg kt1gv.u- uc3 of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnettk3 gvugu1.- cic field?

  A circular loop of wire q92oaio u4d 7*y-fhk omsp8 h4of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the liq yho8-amd *o2u7f4h4osk9 poop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loop of arvryjb;i/d .q wy+8) orea $0.25 \; m^{2}$ carries a current of 5.0 A. The coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point, the Earth's magnetic field is $1.2 \times 10^{-4} \; T$ directed $60^{\circ}$ below the horizontal. What is the magnitude of the torque which acts on the loop?

  In a mass spectrometer, a single-charged part ;fwz/e+ q,is:zns u3 5lfo6nlicle (charge e) has a speed of $1.0 \times 10^6 \; m/s$ and enters a uniform magnetic field of 0.20 T. The radius of the circular orbit is 0.020 m. What is the mass of the particle?

  A doubly charged ion with vel r9:nu3t+7c dtihx0ofo ;hdpt3+ jf3mocity $6.9 \times 10^6 \; m/s$ moves in a path of radius 30 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?

  A proton travels througl m*ern7n zaxf35(g8bh a potential of 1.0 kV and then moves into a magnetic field of 0.040 T. What is the radius of the protozn7lf*e 8(gx ranb53m n's resulting orbit?

  A proton is accelerated from rest through 500 V. It enters a magne+1ji9vf( 1zt e9rm1r*(ksu ix ugv uf3tic field of 0.30 T oriented perpendicular to its direction of motion. Det *11r( rij z3fui+sufekt9v9ugx1 vm(ermine the radius of the path it follows.

  A beam of electrons is accelerat:zvl+ah0r.95 c ggdqmed through a potential difference of 10 kV before entering a velocity selector. If the B-field of the veldl gq5 9rg+amz: v0ch.ocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?