In Fig. 26.5, the battery has appreciable internal resistance. Whathappens to th

Question

In Fig. 26.5, the battery has appreciable internal resistance. Whathappens to the brightness of bulb B1 after weclose the switch S?

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Mark the right answer
1)The brightness decreases permanently.
2)The brightness decreases temporarily but gradually increases backto its original brightness.
3)The brightness increases permanently.
4)The brightness does not change
5)The brightness increases temporarily but gradually decreases backto its original brightness.

Explanation / Answer

decreases permanantly

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