Chapter 21, Problem 14MCQ

To determine

The correct option from the provided options, which will lead to a decrease in the magnitude of $I_{rms}$ through the solenoid, given that a light bulb and a solenoid are connected in series with an AC nature power supply.

a. Decrease the length of the solenoid while keeping the number of turns and the radius of the solenoid constant.

b. Increase the frequency of the AC.

c. Increase $\Delta V_{ACrms}$.

d. Insert a paramagnetic material into the solenoid.

e. Increase the number of turns in the solenoid per unit length by a factor of $2$ and decrease its radius by a factor of $2$.