What term describes the rate of flow of electric charge?

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Build your vocabulary for the IGCSE Coordinated Science Exam. Study with flashcards and multiple choice questions, each with hints and explanations. Prepare for success!

Multiple Choice

What term describes the rate of flow of electric charge?

Explanation:
The rate at which electric charge flows is current. It tells you how much charge passes a point every second, and it’s measured in amperes (1 ampere = 1 coulomb per second). This flow occurs because a potential difference pushes charges through a conductor, but current specifically describes the amount of charge moving per unit time. The other terms describe related ideas: potential difference is the push or energy per unit charge that drives the flow; EMF is the total energy per charge provided by a source (often when no current is flowing inside the source); and the electric field is the space around charges that exerts force on them.

The rate at which electric charge flows is current. It tells you how much charge passes a point every second, and it’s measured in amperes (1 ampere = 1 coulomb per second). This flow occurs because a potential difference pushes charges through a conductor, but current specifically describes the amount of charge moving per unit time. The other terms describe related ideas: potential difference is the push or energy per unit charge that drives the flow; EMF is the total energy per charge provided by a source (often when no current is flowing inside the source); and the electric field is the space around charges that exerts force on them.

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