The light bulb is connected in the circuit shown in the figure with the switch o

Question

The light bulb is connected in the circuit shown in the figure with the switch open. All the connecting leads have the appreciable resistance and the battery has no internal resistance. When we close the switch. Which statements below accurately describe the behavior of the circuit? The bulb has a constant resistance, temperature dependence is neglected. 9There may be more than one correct choice.) The brightness of the bulb will increase. The brightness of the bulb will decrease. The brightness of the bulb will not change. The potential drop across R2 will decrease. The potential drop across R2 will not change.

Explanation / Answer

when we close the switch the net resistance will decrease because R2 and R3 will become parallel and the net resistance of R2 andR3 will smaller than both R2 and R3

if the resistance will decrease the current will increase because voltage is constant so,

brightness of the bulb will increase

potential drop across R2 will decrease

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