E) The capacitance has doubled. e figure shows a steady electric current passing

Question

E) The capacitance has doubled. e figure shows a steady electric current passing through a wire with a nars What happens to the drift region B and then to region C? velocity of the moving charges as they go from re A) The drift velocity increases all the time. B) The drift velocity increases from A to B and decreases from B to C) The drift velocity remains constant. D) The drift velocity decreases all the time. E) The drift velocity decreases from A to B and increases from B to light bulb is connected in the circuit shown in the figure with the s capacitor uncharged. The battery has no appreciable internal resi he following graphs best describes the brightness B of the bulb a er closing the switch?

Explanation / Answer

The drift velocity is independent of the cross sectional area so the drift velocity will be same for B and C.

Moreover, Resistance changes for B and C but since it is said that current is same between B and C therefore, the drift velocity must be constant. [answer - C]

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