College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 10

The bolt of lightning depicted in Figure P20.61 passes 200 m from a 100-turn coil oriented as shown. If the current in the lightning bolt falls from 6.02 × 10 6 A to zero in 10.5 s, what is the average voltage induced in the coil Assume the distance to the center of the coil determines the average magnetic field at the coil's position. Treat the lightning bolt as a long, vertical wire.