A resistor and a capacitor are connected in series across an ideal battery. At t

Question

A resistor and a capacitor are connected in series across an ideal battery. At the moment contact is made with the battery the voltage across the capacitor is equal to the battery's terminal voltage. less than the battery's terminal voltage, but greater than zero. zero. A resistor and a capacitor are connected in series across an ideal battery. At the moment contact is made with the battery the voltage across the resistor is equal to the battery's terminal voltage. less than the battery's terminal voltage, but greater than zero. zero. The figure shows three identical lightbulbs connected to a battery having a constant voltage across its terminals. What happens to the brightness of lightbulb 1 when the switch S is closed? The brightness will increase. The brightness will decrease The brightness remains the same as before the switch is closed.

Explanation / Answer

here,

8)

at the moment moment contact is made with the battery ,

the voltage across the capacitor is C) zero

it behaves like short circuit

9)

at the moment moment contact is made with the battery ,

the voltage across the resistor is A) equal to the battery's terminal voltage

10)

when the switch S is closed

the overall resistance of the circuit is increased

and the current through the lightbulb 1 increases

so, a) the brightness will increase

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