Physics · Current Electricity
In a potentiometer, when a cell in the secondary circuit is shunted with a 4 Ω resistance, the balance point is obtained at a length of 120 cm. When the same cell is shunted with a 12 Ω resistance, the balance point shifts to a length of 180 cm. The internal resistance of the cell is:
- 16 Ω
- 212 Ω
- 34 Ω✓
- 43 Ω
Correct answer
4 Ω
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