This definitions covers Key Definitions within Current & Charge for GCSE Physics. Revise Current & Charge in Electricity for GCSE Physics with 19 exam-style questions and 30 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 6 of 13 in this topic. Make sure you can use the exact wording confidently, because definition marks are often lost through vague language.
Topic position
Section 6 of 13
Practice
19 questions
Recall
30 flashcards
📖 Key Definitions
Electric current (I): The rate of flow of charge. Measured in amperes (A). One ampere = one coulomb per second.
Charge (Q): A property of matter that causes it to experience a force in an electric field. Measured in coulombs (C).
Coulomb (C): The SI unit of electric charge. 1 C = charge carried by approximately 6.24 × 10¹⁸ electrons.
Conventional current: The agreed direction of current flow — from positive to negative terminal. This is opposite to the actual direction of electron flow.
Ammeter: An instrument used to measure electric current. Must always be connected in series in a circuit.