Consider the circuit in the figure below with S 1 open and S 2 at position a . S

Question

Consider the circuit in the figure below with S1 open and S2 at position a. Switch S1 is now thrown closed.

(a) At the instant it is closed, across which circuit element is the voltage equal to the emf of the battery?

the inductorthe resistor    both the inductor and resistor

(b) After a very long time, across which circuit element is the voltage equal to the emf of the battery?the inductorthe resistor    both the inductor and resistor

When switch S1 is thrown closed, the current increases and an emf that opposes the increasing current is induced in the inductor. When the switch S2 is thrown to position b, the battery is no longer part of the circuit and the current decreases.

Explanation / Answer

a) the inductor

b) the resistor

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