Q6).
A coil with 5 windings or turns, and an area of0.0679m2 rotates in a uniform magnetic field ofmagnitude 0.886T. The emf induced in the coil has the followingform as a function of time :
ε(t)= ε0 sin(ωt)
ε0 = 22.3 Volts. Calculate ω in radians persecond.
Q7).
The current in a long solenoid with 19 turns per meter of radius0.8987m depends on time as follows:
Is= 38.7(Ampere/second)*t
where t is time.
A circular loop of wire of radius 0.163m is concentric aroundthe solenoid. An electrical current of 0.00494 Amps is induced inthe loop. (Solenoid can be treated as infinitely long. Note thewire loop is outside the solenoid.) Find the resistance of the loopin Ohms.
Q7A). In the previous situation, in which a current through asolenoid is increased and thereby a current is induced in a wireloop which is concentric with the solenoid. Is the induced currentin the loop in the same direction as the current in the solenoid orin the opposite direction?
