Electromagnetic Induction

A solenoid has an initial inductance $L$. If the number of turns is doubled and the length is also doubled, what is the new inductance?

An inductor with an inductance of 4 H carries a current of 2 A. How much energy is stored in the inductor?

The current through a 5 H inductor changes at a rate of 3 A/s. What is the magnitude of the induced EMF in the inductor?

How does increasing the number of turns in a solenoid affect its inductance?

A solenoid has the following properties: number of turns $N = 500$, length $\ell = 0.2 \text{ m}$, cross-sectional area $A = 0.001 \text{ m}^2$, and core permeability $\mu_{\text{core}} = 4\pi \times 10^{-7} \text{ T}\cdot\text{m/A}$. What is the inductance of the solenoid?

An inductor with inductance $L$ initially has a current $I_0$ flowing through it. This inductor is then connected to a capacitor with capacitance $C$. What is the maximum energy stored in the capacitor during the subsequent oscillations?

According to Lenz's Law, the direction of the induced EMF in an inductor is:

Which of the following best describes inductance?

The current through a 2 H inductor varies with time as $I(t) = 3t^2 + 5t$ (in amperes). What is the induced EMF in the inductor at $t = 2$ s?

How does the energy stored in an inductor change if the current through it is doubled?