The work done in moving a unit charge across two points in an electric circuit is a measure of ?

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Current

Potential difference

Resistance

Power

answer is B.

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Detailed Solution

The work done in moving a unit charge across two points in an electric circuit is a measure of potential difference.
The potential difference is the charge carriers' power between two points in a circuit. Potential difference (p.d.) is measured in

volts

(V) called voltage. Like field strength, which is defined as force per unit charge, the electric potential difference at any point is defined as the change in potential energy per unit charge. When the scalar quantity V is assigned to each location in space, it can utilise the electrical potential to define an electric field.

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