In Figure (below), in which case, the LED will glow when the swit… - Vidyadip

Question

In Figure (below), in which case, the LED will glow when the switch is closed?

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Answer

The LED will glow when the switch is closed in case of (a). Here, the electrolyte is the lemon juice. Copper and iron plates properly placed in a weak acid or salt solution and connected in a circuit, produce electricity. In case of (b), the liquid used is pure water that does not become an electrolyte.

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