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

1.	Why does the bulb glow brighter when it is powered by two cells rather than one?
A.	The flow of electricity in the circuit is less.
B.	The flow of electricity in the circuit is the same.
C.	A cell and a switch
D.	The flow of electricity fluctuates.
Answer» D. The flow of electricity fluctuates.

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

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