Question

Why is a bulb brighter when it is powered by two cells rather than one ?

Answer 1

Why is a bulb brighter when it is powered by two batteries rather than one. Two batteries provide a greater flow of electricity then one. QUESTION SEVEN: Ruby has connected two bulbs across two batteries in a simple circuit. ... Cork is an insulator and will break the circuit, which will not light the bulb.

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Answer 2

Q . Why is a bulb brighter when it is powered by two batteries rather than one.

ANS-  Two batteries provide a greater flow of electricity then one.