If the north poles of two bar magnets are brought cl/;jehx+ d, wsiose to each other, the magnets i,j x/+e; swdhwill

  If the south pole of one bar magnet esgu1hu:htz + ea92 x/is brought near the north pole of a second bar magnet, the two magnets will2e/e htx:a+h uuzg 1s9

  If a bar magnet is divided int4ovp yusm,g9/ o two equal pieces,

  The Earth's geographic North Pole is magneticavx4 mv8m)e3 cm wqb4n2lly a

  The south pole of a magnet point 735x/ (sungfhu3r t-8wuc9q fe.wopzs toward the Earth's

  An electric current pro bl3 z af*n8p9cadw8i8duces

  Which of the followinzisaz/.hfqgb+ 5 )33ql-4ym fel4jzcg is correct?

  A vertical wire carries a current straight down. Tot1ifu-ooq-3.al f x98 i e/rij the east of this wire, the magnetic fieluj/e-tql. a8i9f -ooriif3 x1 d points

  A horizontal wire carries a current straight toward you. From your point of c41 aoa j5ffr2view, the magnetic field caused by thi1 5ja2a4crfof s current

  A current carrying loop of wire lies flat on a table top. *hz1ntn0 e/1 ybnu2a2kbdf l: When viewed from above, the current moves around the loop in a countern2 d k1nl1*nez0/2hybu:ba ft clockwise sense. 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 table top. When vw b4z jbeyzk7vqew839 f,)p+ qiewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magn ,jp7bq8zkfvzby)q3eww 49e +etic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic fieldvl/o5l (i m2jio.x:qe is the

  1 T is equivalent tos.laj6z a3sp 6j k(g*,h/rvxyu h/nw8

  The direction of the force on a current-carrying wire qc0vbpkb+ vq++3 fmc2in a magnetic field is described by which of the follow 2mfk+ b03pc+cv qbqv+ing?

  The force on a current-carrying wire in a rg)hj 6td8* sk89 rybtmagnetic field is the strongest when

  The force on a current-carrying wire in a magneuv+ f7+xwtsp 3ap7xez3z 21yo tic field is equal to zero when

  A vertical wire carries a current straight up in a -(5afjf-op+ yra)( 4hw-j/l+yt3nudpf tgkj region where the magnetic field vector points due north. What is the diwof j ( )4d+h-yjf -gjuyf/5 p(l3attrnpak+- rection of the resulting force on this current?

  A charged particle moves and experiences no magnetic force. From thi(q a+ hd.f li;4wc6 gi+ly6lgrs we can conclude that+ci + lfll4ydqg.gwh 6(;ai6r

  A charged particle moves with a constant srt8mf5ks(q-a 8bi/ad peed through a region where a uniform magnetic field is present. If the magnetic i/ d-mrs 5aakb(8qft8field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves

  A charged particle movesj0 p rb k4k1e)n1ywrgzi5z a,6 across a constant magnetic field. The magnetic force on thyn,)kg1r0z6wze p5j abr 1ik4 is particle

  A charged particle is injected into a uniform magnetic field such that its -q 5x0.qd*hmux*gpcb2f o yu4velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight q mx0hpguu q4y-dof2 cx5b*.*, the particle will

  A charged particle is observed traveling in l( l3 ly(o/r 89m7yfvvmdx c2ka circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circ7vo2(fdml 8ky vll93c/m yrx(ular path would be

  A particle carrying a charge of +e travels in a cem s +0vhm6a9nircular path in a uniform magnetic field. If instead the particle ce anm0m6v9 h+sarried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward atw vs g8 q.xd2gd.hmadd z//,s 1ca-qx6 speed V in a uniform magnetic field that is directed straight da6-w12.d d,8 zv m c.gd/axs/dx ghqsqownward. The magnetic force that acts on it is

  An electron has an initial velocity tohpqo3333-s n.xletl um- j vl, the south but is observed to curve upward as the result of a 3v3el -,p-onq3luj.h 3x tsmlmagnetic field. The direction of the magnetic field is

  An electron moving along the +xj x .kztv0qag4)sy.t3 axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to ritq0)za3. gt. s4 kyjxvght, +y up, and +z out of the page.)

  The magnetic field produced by a long st abxt-,3syc*u: rs7gyraight current-carrying wire is

  At double the distance from a long/ can0v7.cy 0 4p7cg,tb02svy ogecwu current-carrying wire, the strength of the magnetic field produced by that wire de /u70gnwc2.cbc0y, vvas 4oe 70 gytcpcreases to

  Two long parallel wires placed side-by-side on a horizontalglzz* ev6)cd 5 table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current away from you. From your point of view, the magnetic field at the point exactly m6*dcve z)5 lgzidway between the two wires

  Two long parallel wires placed side-by-side on a horizontal9s ,odhe x+x u76ltq8nm1/ ibp table carry identical current straight toward you. From your point of pi1 m,s o+t6lbu 7qn8d 9hxex/view, the magnetic field at the point exactly between the two wires

  Two long parallel wires carry eqqm b(h6gyw*ac w7p 5e4t9 ort4ual currents. The magnitude of the force between the wires goa4eq9yph4* brtmw( 65t wc7 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 toward the east. A proton moves to ivi(a++com/zaz2s.gward the east alongside and just south of the wire. Whaviz a(i/ .zac gos+2+mt is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bottom of 82;xsf9v gsjgthe page. What is the direction of the magnetic force it produces on an electron that is moving p 8x;sfj2gv9sgerpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed si 7wx9)e2c qehrde-by-side on a horizontal table. If the wires carry current in tqer9he72wx c)he same direction,

  Two long parallel wires are t ,ff55c -5+f wyzv9ahzac;mlplaced side-by-side on a horizontal table. If the wires carry curren9a+c 5vza fwlft5fc mh;z5y-,t in opposite directions,

  Consider two current-carrying circular loops. Both are made from one strand ollqxu+ym4 e3,f wire a e mlyul43,xq+nd both carry the same current, but one has twice the radius of 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-carrying circular loops. Both are made from one straree9s87mkod8 +hx7f fnd of wos9 hd 8m+fe 87ek7xrfire and both carry the same current, but one has twice the radius of the 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 looqq,n5 7ydad-rp occurs when the angle between the loop's magnetic moment and the magnetic field vecto dr, d5qqn-ay7r is

  When placed askew in a magnetic field, a current carrying loim6m 2k* wl4 n u.x9g)fdfxnu)op that is free to rotate in any directin2mgf*4lunkx m 6 9w i)u).dxfon will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essentially all electric motnj4)+aheda imh92 x)it;:gmx orsm9 jx+amnedx ;i a):hh 42t)gi?

  A circular wire loop liem3o 2jk4f/)aj , nqxfjorf93n s in 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 caus39jn2j rxjf 4an3omf)f, kqo /ed by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge jck faw4v(bw4zc2 8 er42 dr7xq is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular p242cj r wa(8 4dex7brkz4cfv wath 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 terms of B, q, V, and R.

  A velocity selector consists of adv84pc) w kre7keit9 - charged 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 follo) k-de vwtic8kr47e 9pwing, disregard the 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 c/ewvht ,/l.s8 -shgk1 em tu9current of 0.60 A is oriented parallel to a uniform magnetic field of/t-lsest/gu ,9e.1c hkhvm8 w
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a44 u lm ;wyjfrxn27jw) 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 a straight wkk.yi yx1uq3 p264ryoire carrying 5.0 A when it is placed in a magnetic field of 0.022korxy6.yk3pi 1q4 uy0 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg t/ cf c z9kol.xq60+omand is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic fotcqz o .o9 c0fl6/kx+mrce to cancel the weight of the rod?

  A stationary proton is in a uniform magne2 2e:dbilvi)n tic field of 0.20 T. What is the magnitude of the magnetic for2dn)ve bii :l2ce on the proton?

  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 witl8*i0 np clny+h a speed 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 of7)co* ox6gv r:og1xaj $5.0 \times 10^7 \; m/s$ 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 traveling d;nkw )-w 8ylqhkud o0g35bvde72 ksk3ue 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 a spe/wze:j,sw:(a ksa.00z wb(vwgkn( k yed 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 a speed o ()xd*9xk+ zt boz5bptf $8.0 \times 10^6 \; m/s$ 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 e:6 tr)l6ckkxof $3.0 \times 10^6 \; m/s$ 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 wireb++bt1l8,a w dd 4cawq carries a current of 25 A. What is the magnitude of thec alt4 ww+adb+qb,1 d8 magnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what magnetic fiz6u).m baekqsn4k )7m eld at the ground, 10.b4m6 k eamk uq)zn7s) m away?

  How much current must flow for;.fl (7)uoe9wnr.oo pkjkcp kc24: h h $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire ca+6+3 jv phs 1knpz2cnhrrying a current of 5.0 A is the magnitude of 2cp v6h1s+pn zjn+h3 kthe magnetic field due to the wire equal to the strength 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 directions. Thei - cx8s dfyf)f9er48yy are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wi ffs-e9 d8ri4)fx yyc8re and 60 cm from the other?

  Two long parallel wires ca- j wibbk32-ju0v8g40q/ep dp8tbgfl rry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnetic fieveq t 0p8 u-4p/0f382wig- j bbgklbdjld midway between the two wires?

  Two long parallel wires carry currents of 20 A and 5.0 A in opposite a:k 0+zig5xabdirections. The wires a ik ax5+zgb:a0re separated by 0.20 m. At what point between the two wires are the contributions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are paralvcnm xdo4zvq4q3460 d lel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-y plane. What magnetic field does one of the wires experience due to the other 4no6x34qdcd vzmv0q 4wires?

  Two long parallel wires carry currents of 5.0 A and 8.o dp7+owcd/xbnbk 3 290 A in the opposite direction. The wires are separatexw 3podbnd9+o2c7/ kb d by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of radius 4.z- nv,kd7q(usn)pxx-2qcxe4 0 cm when a current of 2.0 A flows in th xuqde x, sqckzx47v-)p n2n-(e wire?

  A solenoid 20 cm long is wound with 50l v0yll 1 ( 9yy+z.)zbuiamn7v00 turns of wire. What magnetic field is produced at the center of the solenoid when 1l09n)avv i ylzu.mbzl(y+7ya current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long and carries a current of 4.0 A5pxby0 )bzd v7. What strength of magnetic field will it y0b vpd7b)5 xzhave at its center?

  How much current must pass throug 0h.oxq;s -a/u0bztfdh a 400 turn coil 4.0 cm long to generate a 1.0-T magnetic field at thf-q z; 0thb.ouads0x/e center?

  How many turns shouln 24ch vwb7gu0g 3j59bz0*bu:zkhs cxd a 10-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 turns gja /a+zzp4tr:-p a i-that carries 6.0 A if its dimensions are 4.0ap-j+pa4 z tz:iga-/ r cm x 8.0 cm?

  A circular loop of wirnkje( ;m*w c.pe of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. wjm*k np.c( ;e What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire.j,msjngr*mtin x /t 9e 3x87n of cross-sectional 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 carryin2djxgn wd uj, d;z(e*+g a current of 2.0 A is in a magnetic field of 3.5 T. The loop hw*(; + 2,ejxddzgdnju as an area 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 wir+bn.5t qm7aj5gwhxz-e of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnet5.mwt j7+-n5ghx qbazic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.3: b*ps* u; inyzllf+-lpz5y:mf70u hw 8rrl.b0 T. The current in the loop y fsi p:lmu l+-rf pr z5b*l8.;lw7yuzhn*0b:is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular wire loopwz 8*cn/qw+cb of area $0.25 \; m^{2}$ 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 spectrometercb/v:x9jv 7an :po*p b6kaa3 .mqt lv0, a single-charged particle (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 veloxh ylytktez:c- n05* :city $6.9 \times 10^6 \; m/s$ 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 through a potential of 1.0 kV and thenw 8/:c rap84o06lzb gx bpph(fnky:s( moves into a magnetic field of 0.040 T. What is the radius of the proton:p(8b:lyfp 4hr p abngwks(o608x z/ c's resulting orbit?

  A proton is accelerated from rest through 500 V. Itt.q i3 p.wscv, enters a magnetic field of 0.30 T oriented perpendicular to its direction of motiqts..c 3,p wvion. Determine the radius of the path it follows.

  A beam of electrons is accelerated through a potential difference of wiyrt:) k r(/r10 kV before entering a velocity selector. If the B-field of tr):t /rik rwy(he velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?