**Q2: **

For the circuit shown, , , , , and . Find the current through the inductor s after the switch is reopened.

- A A
- B A
- C A
- D A
- E A

**Q3: **

A resistor and a self-inductor are connected in series to a source of emf, creating an RL circuit. The current through the circuit increases to 20% of its steady-state value in 3.0 s. What is the time constant of the circuit?

**Q4: **

For the circuit shown, emf V, inductance , and resistance Ξ©. Steady state is reached with closed and open. is then closed and immediately afterwards (at ) is opened.

Determine the current through at .

Determine the current through at .

Determine the voltage across at .

Determine the voltage across at .

**Q5: **

For the circuit shown, , , , and . Find the current through the inductor after the currents have reached steady-state values.

**Q6: **

The current in the *RL* circuit shown below reaches
half its maximum value in 1.75 ms after the switch is
thrown.

Determine the time constant of the circuit if .

Determine the resistance of the circuit if .

**Q7: **

Consider the circuit shown with , , and .

Find at the instant switch is first closed.

Find at the instant switch is first closed.

Find at the instant switch is first closed.

Find after the currents have reached steady-state values.

Find after the currents have reached steady-state values.

Find after the currents have reached steady-state values.

**Q8: **

The switch of the circuit shown is closed at .

Determine the initial current through the battery.

Determine the steady-state current through the battery.

**Q9: **

The switch in the circuit shown is closed at .

Find the current through .

Find the current through .

Find the current through the battery at .