Q15: A square, single-turn wire loop , l = cm on a side is placed inside a solenoid that has a circular cross sec- tion of radius r = cm as shown in the end view of Figure P31.15 (page 960). The solenoid is cm long and wound with turns of wire.
(a) If the cur- rent in the solenoid is A, what is the magnetic flux through the square loop?
(b) If the current in the sole- noid is reduced to zero in s, what is the magnitude of the average induced emf in the square loop?
n =
pi =
g =