Name an instrument for measurement of e.m.f. of a cell.
Q.2 (ii) Name an instrument for measurement of e.m.f. of a cell.
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Answer: Potentiometer.
At the null point a potentiometer draws no current from the cell, so it measures the true e.m.f. (a voltmeter draws some current and reads only the terminal p.d.).
Doubtly AI
· 27 Oct 2026
AI-verified · Oct 2026
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