Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Electromotive force (EMF) refers to the potential difference between two points in a circuit. It's essentially what drives electric current around a circuit.
This is another term for potential difference or electromotive force. It's measured in volts.
Resistance: In electrical circuits, resistance is a measure of how much an object resists the passage of electric current.
Ohm's Law: This law states that the current passing through a conductor between two points is directly proportional to the voltage across the two points.