Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

Voltage is defined as

Voltage is the potential difference between two points in a circuit—the energy per unit charge that would be gained or lost as a charge moves from one point to the other. This potential difference acts as the push that drives current around the circuit. It’s not the rate of current flow (that’s current) and it’s not the opposition to flow (that’s resistance). Remember that voltage is about energy per unit charge, so one volt equals one joule per coulomb. For example, across a 5-volt difference, each coulomb of charge would gain or lose 5 joules of energy as it moves between the two points.

Voltage is the potential difference between two points in a circuit—the energy per unit charge that would be gained or lost as a charge moves from one point to the other. This potential difference acts as the push that drives current around the circuit. It’s not the rate of current flow (that’s current) and it’s not the opposition to flow (that’s resistance). Remember that voltage is about energy per unit charge, so one volt equals one joule per coulomb. For example, across a 5-volt difference, each coulomb of charge would gain or lose 5 joules of energy as it moves between the two points.