Consider the below circuit diagram.

Which of the following bulbs would glow, when the switch is in its OFF position?

Bulb A

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Bulbs B and C

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All the bulbs would glow

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None of the bulbs would glow

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Solution

The correct option is D None of the bulbs would glow
When the switch is in OFF position, the circuit is incomplete, i.e. there is no closed path for the electric current to flow through the components of the circuit. Hence, none of the bulbs would glow.

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Which of the following bulbs would glow, when the switch is in its OFF position?

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