Measuring Potential Difference in Volts
Potential difference, measured in volts, represents the work required per unit charge to move a charge between two points in an electric field.
The specific instrument designed to measure this potential difference between two points in a circuit is called a voltmeter.
Electrical Measurement Devices
Different electrical quantities are measured using specialized devices:
- Voltmeter: Measures potential difference (voltage) across two points. It is connected in parallel with the component across which the voltage is to be measured.
- Ammeter: Measures electric current flowing through a point in the circuit. It is connected in series.
- Ohmmeter: Measures electrical resistance.
- Energy metre: Measures the amount of electrical energy consumed over a period.
Therefore, the device used to measure potential difference in volts is the voltmeter.
Important Questions from Measuring Instruments
Which one of the following weather conditions indicates a sudden fall in barometer reading?
______ is used to measure the pressure inside the eyes of a person.
A ‘gnomon’ is a part of a ________.
An instrument called the ______ measures the electric current in a circuit.
Seismograph is used to measure:
