Question

If the potential difference across the bulb in a certain flashlight is 3.0 V, What is the potential difference across the combination of batteries used to power it?

Answer 1

Answer:

3.0 V

Explanation:

The voltage across the bulb is the voltage across the batteries, since the batteries are the only source of power for the bulb. So the voltage across the batteries is 3.0 V.

Answer 2

The potential difference should be 3.0 V.

Calculation of the potential difference:

In the case when the potential difference for the flashlight is 3.0V so here the batters should be considered as the only source with respect to the power for the bulb. Due to this, the potential difference across the batteries combination that used to power should also be 3.0 V.

Therefore, The potential difference should be 3.0 V.

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