Question

5) A solenoid with 3 x 106 turns per meter runs through the x-y plane. It initially has a current of 7 amps running clockwise. A wire shaped like a equilateral triangle would 7 times with sides of length 4 meters is placed in the x-y plane in the solenoid. Over a a time of 0.8 seconds, the solenoid changes its current somehow which induces a (average) current in the triangle of 23 amps running counter-clockwise. If the resistance of the triangle is 43 Ohms, what is the final current of the solenoid in amps?

Answer 1