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

The flow of electricity in the circuit is less.

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The flow of electricity in the circuit is same.

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The flow of electricity in the circuit is greater.

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The flow of electricity fluctuates.

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Solution

The correct option is C The flow of electricity in the circuit is greater.
The bulb glows brighter and brighter as we keep on adding more cells in series. This happens because more chemical energy is converted to electrical energy when two cells are used. Consequently, the flow of electric current is greater.

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