A single coil with a radius of 0.02 m is placed inside a 3m longsolenoid that has 600 turns. The radius of the solenoid is 0.15 m.The plane of the coil is perpendicular to the axis of the solenoid.The solenoid is connected to a battery, an ammeter and a switch.The ammeter reaches 5A in 0.2 seconds and remains constant.
a) What is the change in the magnetic flux across the small loop?
b) What is the average induced emf (voltage) in the small loop?
c) Another solenoid has an inductance of 8.000 henries and aresistance of 2.772Ω. It is connected to a battery and aswitch. How long does it take for the current toreach half of itsmaximum value after the switch is closed?