Length of the rectangular wire, l=8cm=0.08m
Width of the rectangular wire, b=2cm=0.02m
Hence, area of the rectangular loop,
Magnetic field strength, B=0.3T
Velocity of the loop, v=1cm/s=0.01m/s
Emf developed in the loop is given as:
Time taken to travel along the width, t=DistancetravelledVelocity=bv
Hence, the induced voltage is 2.4×10−4V which lasts for 2 s.
Emf developed, e=Bbv
Time taken to travel along the length, t=DistancetraveledVelocity=lv
Hence, the induced voltage is 0.6×10−4V which lasts for 8 s.