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AQA GCSE · Question 07.3 · Electricity
In 30 seconds, 24 coulombs of charge flow through the battery.
Calculate the current in the battery.
Use the equation:
current = charge flow / time
In 30 seconds, 24 coulombs of charge flow through the battery.
Calculate the current in the battery.
Use the equation:
current = charge flow / time
How to approach this question
1. Write down the equation provided: current = charge flow / time.
2. Identify the values given: charge flow (Q) = 24 C and time (t) = 30 s.
3. Substitute these values into the equation.
4. Calculate the result. The unit for current is Amperes (A).
Full Answer
Electric current (I) is defined as the rate of flow of electric charge (Q).
The equation is:
I = Q / t
Where:
- Q is the charge flow in coulombs (C)
- t is the time in seconds (s)
- I is the current in amperes (A)
Given:
- Q = 24 C
- t = 30 s
Substituting the values:
I = 24 / 30
I = 0.8 A
Common mistakes
✗ Dividing time by charge instead of charge by time.
✗ Calculation errors.
Practice the full AQA GCSE Physics Foundation Tier Paper 1
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