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Question

Why does the bulb glow brighter when it is powered by two cells rather than one?

A
The flow of electricity in circuit is less
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B
The flow of electricity in the circuit is the same
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C
The flow of electricity stops
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D
The flow of electricity in the circuit is more
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Solution

The correct option is D The flow of electricity in the circuit is more
More chemical energy is converted to electrical energy when two cells are used. Consequently, the flow of electric current is more. Hence, the bulb glows brighter.

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