What is a Voltmeter?

A voltmeter is an instrument used to measure voltage. It can measure both direct current (DC) and alternating current (AC) voltage. Voltmeters are often used in electrical and electronic circuits to measure the voltage of a power source or the voltage across a component.

• What is a voltmeter?
• What are the different types of voltmeters?
• How do voltmeters work?
• How do you use a voltmeter?

• A voltmeter is an instrument used to measure voltage.
• There are two main types of voltmeters: analog voltmeters and digital voltmeters.
• Analog voltmeters use a needle to point to a scale that indicates the voltage. Digital voltmeters display the voltage in a digital format.
• Voltmeters work by measuring the current that flows through a resistor. The voltage across the resistor is then proportional to the current.
• To use a voltmeter, connect the leads of the voltmeter to the points in the circuit where you want to measure the voltage.