4
A rectangular wire loop of sides 8 cm and 2 cm with a small cut is
moving out of a region of uniform magnetic field of magnitude 0 3 T
directed normal to the loop What is the emf developed across the
cut if the velocity of the loop is 1 cm s–1 in a direction normal to the
(a) longer side, (b) shorter side of the loop For how long does the
induced voltage last in each case