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Two light bulbs, B1 and B2, are connected to a battery having appreciable internal resistance as ...

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Two light bulbs, B1 and B2, are connected to a battery having appreciable internal resistance as ...

Two light bulbs, B1 and B2, are connected to a battery having appreciable internal resistance as shown in the figure. What happens to the brightness of bulb B1 when we close the switch S?

▸ The brightness of B1 does not change.

▸ The brightness of B1 decreases temporarily but gradually increases back to its original brightness.

▸ The brightness of B1 increases temporarily but gradually decreases back to its original brightness.

▸ The brightness of B1 decreases permanently.

▸ The brightness of B1 increases permanently.

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Essential University Physics

Edition: 3^rd

Author: Wolfson

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