[填空题]
A triangular conducting loop with the dimensions shown moves horogxg:x5n;l (o kckn(: izontalsf,pm 7 e,rwr)ly to the right with a constw,)7rms,epfr ant velocity of $13.0\,cms^{−1}$. At $t=0$ the loop enters a uniform $1.2\,T$ magnetic field which is directed into the plane of the paper. There are 75 turns of the wire on the loop.
1.Define magnetic flux linkage $Φ$
2.(1)Calculate the magnetic flux linkage on the loop when the loop is entirely in the uniform magnetic field. State your answer with the appropriate unit. $Φ$ = $\times10^{-1}$
(2)Draw, on the axes, a graph to show the variation with time of the magnetic flux linkage in the loop, starting from the point in time where the leading edge enters the region of magnetic field. Include values for time on the horizontal axis.
3.(1)Calculate the magnitude of the average induced emf on the loop for the time period where it enters the magnetic field. $ε_{av}$ = V
(2)Draw, on the axes, a graph to show the variation with time of the emf induced in the loop.
