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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
current = charge flow / time
current = 24 C / 30 s
current = 0.8 A
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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