This topic summary covers Topic Summary: Current and Charge 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 13 of 13 in this topic. Use this topic summary to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 13 of 13
Practice
19 questions
Recall
30 flashcards
Topic Summary: Current and Charge
Key Terms
- Current (I): Rate of flow of charge (A)
- Charge (Q): Amount of electricity that flows (C)
- Coulomb: Unit of charge
- Ammeter: Measures current; in series
- Conventional current: Positive to negative
Key Facts
- 1 A = 1 C per second
- Electrons flow negative to positive
- Conventional current: positive to negative
- Ammeter in series with the circuit
- Current is the same throughout a series circuit
Key Equations
- Q = I × t
- I = Q / t
- t = Q / I
Exam Tips
- Always convert minutes to seconds
- State units: A, C, s
- Ammeter = series; Voltmeter = parallel
- Current is conserved — never "used up"