Why is a voltmeter connected in parallel in a circuit?

Correct option is D

The correct answer is (d) To measure the difference in potential between two points.

• A voltmeter is designed to measure the potential difference (voltage) between two points in a circuit.

• To accurately measure this difference, the voltmeter must be connected in parallel with the component across which the voltage is to be measured.

• This allows the voltmeter to measure the voltage drop across the component without significantly affecting the circuit's operation. Since voltmeters have very high resistance, they draw minimal current and do not alter the overall circuit conditions significantly.

Information Booster:

• Voltmeters are built with very high resistance to ensure they do not affect the current flow in the circuit when measuring voltage.

• If a voltmeter were connected in series, it would impede the current flow and potentially alter the measurement of voltage.

• Ohm's law states that the potential difference across a resistor is proportional to the current and resistance, which the voltmeter measures across a parallel path.