Physics WAEC

When a resistor of resistance R is connected across a cell, the terminal p.d of the cell is reduced to three-quarters of its e.m.f. The internal resistance of the cell is expressed as?
When a resistor of resistance R is connected across a cell, the terminal p.d of the cell is reduced to three-quarters of its e.m.f. The internal resistance of the cell is expressed as?When a resistor of resistance R is connected across a cell, the terminal p.d of the cell is reduced to three-quarters of its e.m.f. The internal resistance of the cell is expressed as?

A. R/4
B. R/3
C. R/2
D. 3R/4
E. 3R

Correct Answer:

Option B – R/3

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