Physics (AS & A Level) · Oct / Nov 2019 · Paper 13 · Question 36
A cell of internal resistance 0.5 Ω is connected to a fixed resistor of resistance 10 Ω. The resistance of the resistor is changed to 20 Ω. Which statement is not correct?
- AThe current in the circuit will halve.
- BThe e.m.f. of the cell will remain constant.
- CThe power dissipated by the fixed resistor will decrease.
- DThe terminal p.d. of the cell will increase.
As printed in the paper
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Correct answer: A. The current in the circuit will halve.
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