Short answerEasy1 mark
3(ii)
A resistance R is connected across a cell with a switch and a rheostat in series. A voltmeter is connected parallel across the cell. Current in the circuit is increased using the rheostat.
How will the voltmeter reading change? (increase / decrease / remain the same)
Topic: Terminal voltage of a cell
Question wording verified against source paper
Answer
Exam answer
The voltmeter reading decreases.
Explanation
Increasing current increases the internal voltage drop Ir.
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