Question

What is called the rate of doing work in an electric circuit?

• A. Power
• B. Energy
• C. Current
• D. Voltage

Answer 1

The correct option is A

Power

The explanation of the correct option (A):

1. The pace at which effort or energy is converted into an electrical circuit is referred to as electric power.
2. Power is represented by P.
3. It is a scalar quantity.
4. The S.I unit of power is $\mathrm{Watt},\mathrm{joule}\mathrm{per}\mathrm{second}$.

The explanation for the incorrect options (B), (C), and (D):

1. In the case of option B, the ability or power to perform the activity, including the ability to move an item by applying force is called energy.
2. In the case of option C, a current is an electrically charged flow. This charge is frequently transferred across electric circuits by transferring electrons inside a wire.
3. In the case of option D, the force exerted by the power supply of an electrical circuit to force current through a conducting loop, allowing it to perform work including such as lighting a lamp is called voltage or emf.

Therefore, option A is the correct answer.