Question 1Warm-upFoundation
A current of 2 A flows for 10 s. How much charge flows?
Q = I × t.
Worked solution
- C
Answer: C
GCSE & IGCSE physics practice
Charge and current questions and answers
Electric current is the rate of flow of charge: charge = current × time, , with charge in coulombs (C), current in amps (A) and time in seconds. 1 amp is 1 coulomb per second.
8 questions · Foundation tier · Every answer is checked as you type it, with a full worked solution. Updated .
Where charge and current comes up
| GCSE (AQA) | Physics and Combined Science, Foundation and Higher. Recall Q = It (on AQA's list of equations to learn). |
|---|---|
| Cambridge IGCSE (0625) | Core: know that current is related to the flow of charge. Supplement (Extended): define current as charge per unit time and recall and use I = Q ÷ t. |
The method
- Q = I × t. Rearranged: I = Q ÷ t and t = Q ÷ I.
- Time in seconds: minutes × 60, hours × 3600.
- mA ÷ 1000 = A.
- Energy transferred: E = Q × V.
Charge and current questions
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Warm-up
Question 2Warm-upFoundation
A current of 0.5 A flows for 1 minute. How much charge flows?
1 minute = 60 s.
Worked solution
- C
Answer: C
Exam-style
Question 3Exam-styleFoundation
120 C of charge flows in 60 s. Calculate the current.
I = Q ÷ t.
Worked solution
- A
Answer: A
Question 4Exam-styleFoundation
How long does it take for 600 C to flow at a current of 3 A?
t = Q ÷ I.
Worked solution
- s
Answer: s
Question 5Exam-styleFoundation
A current of 250 mA flows for 2 minutes. How much charge flows?
250 mA = 0.25 A; 2 min = 120 s.
Worked solution
- C
Answer: C
Question 6Exam-styleFoundation
A phone charges at 1.5 A for 2 hours. How much charge flows?
2 hours = 7200 s.
Worked solution
- C
Answer: C
Challenge
Question 7ChallengeFoundation
A 6 V battery supplies 4 A for 30 s. How much energy does it transfer?
Find the charge, then E = QV.
Worked solution
- C
- J
Answer: J
Question 8ChallengeFoundation
A battery delivers 9000 C of charge in 1.25 hours. Calculate the average current.
1.25 hours = 4500 s.
Worked solution
- s
- A
Answer: A
Common mistakes
- Leaving time in minutes.
- Using milliamps as amps.
- Mixing up charge (C) and current (A).
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Sources
The questions are our own. The “where it comes up” notes are from each board's published specification, checked on 27 October 2026:
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