Physics · Current Electricity
A potentiometer system consists of a driver cell of EMF 2e and internal resistance 2r connected to a potentiometer wire AB of resistance 3R. A secondary cell F has an EMF of e2 and internal resistance r2. For a balance point to be obtainable on the wire AB, what condition must be satisfied by the resistance R?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1R > 19r
- 2R < 16r
- 3R > 49r
- 4R > 29r✓
Correct answer
R > 29r
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