Question

What is the role of voltmeter in a closed circuit?​

Answer 1

Answer:

For measuring electrical potential difference between two points in an electric circuit.

Answer 2

Answer:

The role of a voltmeter in a closed circuit is to measure the potential difference of the circuit.

Explanation:

A voltmeter is a device used to measure the potential difference in an electric circuit. The reading is obtained in volts, millivolts, etc. according to the type of device used. The working principle of a voltmeter is Ohm's law. The law states that the voltage developed in a circuit is directly proportional to the current flowing through it. A voltmeter is always connected in a parallel combination with the circuit. Because it measures the voltage drop across two different ends in a circuit.