Which unit is the standard for electric potential difference?

Which unit is the standard for electric potential difference?

• A. Volt
• B. Ampere
• C. Henry
• D. Farad

Answer: (A)

Electric potential difference is measured in volts. The volt is defined as one joule of energy per coulomb of charge, so it directly quantifies how much energy is transferred per unit charge as charges move between two points. In circuit terms, you’ll see V in volts in formulas like V = I R, where current is in amperes and resistance in ohms. The other units correspond to different quantities: the ampere for current, the henry for inductance, and the farad for capacitance.

Electric potential difference is measured in volts. The volt is defined as one joule of energy per coulomb of charge, so it directly quantifies how much energy is transferred per unit charge as charges move between two points. In circuit terms, you’ll see V in volts in formulas like V = I R, where current is in amperes and resistance in ohms. The other units correspond to different quantities: the ampere for current, the henry for inductance, and the farad for capacitance.