Consider the circuit shown below, which has four identical light bulbs and two s

Question

Consider the circuit shown below, which has four identical light bulbs and two switches. 20 V at C (a) To maximize the brightness of bulb A, how should the switches be set? Both switches should be open Both switches should be closed Switch a should be closed, and switch b should be open. Switch a should be open, and switch b should be closed Switch a should be closed, and switch b can be in either position. Switch a can be in either position, and switch b should be open. Switch a can be in either position, and switch b should be closed. Opening or closing the switches makes no difference to the brightness of bulb A. (b) To maximize the brightness of bulb B, how should the switches be set? Both switches should be open. Both switches should be closed. Switch a should be closed, and switch b should be open. switch a should be open, and switch b should be closed. Switch a should be closed, and switch b can be in either position. Switch a can be in either position, and switch b should be open Switch a can be in either position, and switch b should be closed Opening or closing the switches makes no difference to the brightness of bulb B.

Explanation / Answer

a ) Both should be closed to maximize the brightness
b ) both should be closed to maximize the brightness

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