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Here, a capacitor is connected to a bulb, battery, and an initially open switch.

ID: 1580568 • Letter: H

Question

Here, a capacitor is connected to a bulb, battery, and an initially open switch.

A. How does the brightness of the bulb change after the switch is closed? (Include the next minute in your answer)

B.      Compare this effect to a single bulb connected to a single battery

C.       What happens to the voltage across the capacitor after the switch is closed?

D.      What happens to the voltage across the batter after the switch is closed?

E.       What happens to charge flow after the switch is closed?

F.       What happens to charge after the switch is closed?

Explanation / Answer

A) After the switch is colsed, initial the capacitor acts short ckt so maximum current current flows through the bulb.

so, brightness is very high. But As the time passes the current in the bulb decreases exponentially and the brightness decreases.

B) when bulb is connected to battery the brightness of the bulb remians same.

C) When the switch is closed the Voltage across the capacitor is zero.

But As the time passes voltage across the capacitor increases exponentially.

D) It deos not change.

E) When the seitch is closed charge flow is maximum.

F) When the switch is closed initial charge on the capacitor is zero.

But as the time passes the charge capacitor increases exponentially.