Question

Question 1:

The armature of a small generator consists of a flat, square coil with 180 turns and sides with a length of 1.70 cm. The coil rotates in a magnetic field of 7.55×10−2 T.

What is the angular speed of the coil if the maximum emf produced is 2.10×10⁻² V?

Question2:

At the instant when the current in an inductor is increasing at a rate of 6.40×10⁻² A/s , the magnitude of the self-induced emf is 1.65×10⁻² V .

What is the inductance of the inductor?

If the inductor is a solenoid with 395 turns, what is the average magnetic flux through each turn when the current is 0.715 A ?

Answer 1