A light bulb is connected in the circuit shown in the figure with the switchopen

Question

A light bulb is connected in the circuit shown in the figure with the switchopen and the capacitor uncharged. The battery has no appreciable internal resistance. Which one of the following graphs best describes the brightnessof the bulb as a function of timeafter closing the switch?

1 2 3 4 5 A light bulb is connected in the circuit shown in the figure with the switch 1 2 3 4 5 A light bulb is connected in the circuit shown in the figure with the switchopen and the capacitor uncharged. The battery has no appreciable internal resistance. Which one of the following graphs best describes the brightnessof the bulb as a function of timeafter closing the switch? t after closing the switch? B of the bulb as a function of time S open and the capacitor uncharged. The battery has no appreciable internal resistance. Which one of the following graphs best describes the brightness

Explanation / Answer

Answer: 2

If the switch s is open, then the capacitor gets uncharge. From the figure, the capacitor and the bulb are in parallel. Thus, the flow of current in the capacitor is less and the flow of current in the bulb is high. Hence, the bulb appears exponetially bright as a function of time.

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