2-CT34: LIGHT BULBS CIRCUIT WITH SWITCH-BRIGHTNESS OF BULBS Two light bulbs and

Question

2-CT34: LIGHT BULBS CIRCUIT WITH SWITCH-BRIGHTNESS OF BULBS Two light bulbs and a switch are connected to a battery as shown. When the switch is closed, will the brightness of bulb B ) increase, (i) decrease, or remain the same? Explain your reasoning. (ii) decrease, or (iii) (b) When the switch is closed, will the brightness of bulb A (i) increase, (i) decrease, or (il) remain the same? Explain your reasoning. D2-WWT35: CIRCUIT WITH TWO RESISTORS-CURRENT A battery is connected to a circuit containing two resistors and a switch as shown. A student states: "When the switch closes, the current in resistor A goes down, because resistor A now has to share the current from the battery with resistor B." What, if anything, is wrong with this statement? If something is wrong, identify it and explain how to correct it. If this statement is correct, explain why

Explanation / Answer

a) It will decrease as more current will pass through second branch which have less resistance so current passing through bulb B will reduce.

b) It will increase as net resistance in the circuit will decrease after adding a branch in parallel manner so current through bulb A will increase.

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