Part A:

A 19.0 cm x 19.0 cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. The resistance of the loop is 0.480 Ω . A magnetic field parallel to the z-axis is given by B = 0.820 y2t, where B is in tesla, y is in meters, and t is in seconds. What is the size of the induced current in the loop at t = 0.470 s ?

Part B:

The magnetic field inside a 4.0-cm-diameter superconducting solenoid varies sinusoidally between 8.0 T and 12.0 T at a frequency of 10 Hz.

What is the maximum electric field strength at a point 1.5 cm from the solenoid axis?

What is the value of B at the instant E reaches its maximum value?