Answer :
In a parallel circuit, if L1 opens, L2 remains on, and L1 would be off since each lamp operates independently. The correct answer is (B) L2 would be off and L1 would be on.
When two lamps, L1 and L2, are connected in parallel and L1 opens (meaning it fails or burns out), L1 would not light up because it is no longer part of the circuit due to the open connection. However, L2 would continue to light up because in a parallel circuit, each lamp operates independently of the other. If one lamp fails, the other remains unaffected and continues to receive current, allowing it to stay on. Therefore, the answer is (B) L2 would be off and L1 would be on.
