The potential difference between two insulated conductors is measured in what units?

The potential difference between two insulated conductors is measured in what units?

• A. Amperes
• B. Ohms
• C. Volts
• D. Watts

Answer: (C)

Potential difference, or voltage, is the measure of energy per unit charge between two points in a circuit. The unit is the volt, defined as one joule per coulomb. This quantity describes how much energy would move with each coulomb of charge as it goes from one conductor to the other. Current, measured in amperes, describes how much charge flows per second; resistance, in ohms, describes how much a component resists that flow; power, in watts, is the rate of energy transfer. When you connect a voltmeter across two insulated conductors, you are reading the potential difference between them—the voltage.

Potential difference, or voltage, is the measure of energy per unit charge between two points in a circuit. The unit is the volt, defined as one joule per coulomb. This quantity describes how much energy would move with each coulomb of charge as it goes from one conductor to the other. Current, measured in amperes, describes how much charge flows per second; resistance, in ohms, describes how much a component resists that flow; power, in watts, is the rate of energy transfer. When you connect a voltmeter across two insulated conductors, you are reading the potential difference between them—the voltage.