Question
A rectangular wire loop of dimensions a×b, with a=3.5 cm and b=4.5 cm, is pulled parallel to side a at a constant speed v=4.3 m/sec into a region where the magnetic field, |B|=0.125 T, is uniform and perpendicular to the loop. The loop enters the magnetic field at time t=0.
(a) Calculate the rate at which the magnetic flux through the loop is changing. Express your answer in Tesla m2/sec.
(b) What is the magnitude of the induced EMF at time t?
(a) Calculate the rate at which the magnetic flux through the loop is changing. Express your answer in Tesla m2/sec.
(b) What is the magnitude of the induced EMF at time t?
Answers
ℰ=-dΦ/dt=-d( BAcosα )/dt
cosα=1
ℰ =BA/t= Bab/t=Bb(a/t)=Bbv=
=0.125•0.045•4.3=0.024 V
cosα=1
ℰ =BA/t= Bab/t=Bb(a/t)=Bbv=
=0.125•0.045•4.3=0.024 V
what is the rate? ._.
both a) and b) are 0.024
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