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In which of these circuits will the lamp glow when switch is on? Explain the reason in
each case.
Answers
Answer: The lamp will glow only in the circuit C. In circuit A, when the switch is closed, the ends of the lamp gets short-circuited and no current flows through the lamp. ... So, no current flows in the circuit B as well.
Answer:
The lamp will glow only in the circuit C.
In circuit A, when the switch is closed, the ends of the lamp gets short-circuited and no current flows through the lamp. In circuit B, when the switch is on, the potential difference across the lamp becomes zero because both the batteries are connected with opposite polarities. So, no current flows in the circuit B as well. In the circuit C, upon closing the switch the batteries will send current in the circuit together as they are connected in series with similar polarities. Hence, the lamp will glow only in the circuit C.
Explanation:
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