Two light bulbs, B1 and B2, are connected to a battery having appreciable intern

Question

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?

a. The brightness ofB1decreases temporarily but gradually increases back to its original brightness

b. The brightness ofB1decreasespermanently.

c. The brightness ofB1increases temporarily but gradually decreases back to its original brightness.

d. The brightness ofB1increases permanently.

e. The brightness ofB1does not change

a. The brightness ofB1decreases temporarily but gradually increases back to its original brightness

b. The brightness ofB1decreasespermanently.

c. The brightness ofB1increases temporarily but gradually decreases back to its original brightness.

d. The brightness ofB1increases permanently.

e. The brightness ofB1does not change

Explanation / Answer

b. The brightness of B1 decreases permanently.

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