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One application of an RL circuit is the generation of time-varying high voltage from a low-voltage source. The circuit that is capable of doing that is shown in the figure below. Here, & = 12.0 V, R₁ = 1200 Ω. 2, R₂ = 12.0 Ω, L = 2.00 H.

a. What is the current in the circuit after a long time after the switch has been in position a?

b. Now the switch is thrown quickly from a to b. Compute the initial voltage across each resistor and the inductor.

c. How much time elapses before the voltage across the inductor drops to 12.0 V?

Fig: 1