A second identical bulb is now added to the circuit as shown. The capacitor is d

Question

A second identical bulb is now added to the circuit as shown. The capacitor is discharged The switch is now moved to position 1. Describe the behavior of bulbs B and C from just after the switch is closed until a long time later. Explain. How does the initial brightness of bulb C compare to the initial brightness of bulb A in question i of part a? Explain your reasoning. A long time after the switch is closed, is the potential difference across the capacitor greater than, less than, or equal to the potential difference across the battery? Explain.

Explanation / Answer

When Second bulb is added, Net Resistance increases

thus the flow of charge through C decreases

as Nrt R increases, I decreases and Brightness also decreases

.....................

Inital Brightness of C will be more thanB

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after long of Swicth closed

while Discharging

V = Vo (e^-t/RC)

after long itme

V = Vo *0

so

V across C will be less than actual V

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