A. 0.2Ω
B. 0.4Ω
C. -1.0Ω
D. 3.0Ω
E. 9.0Ω
Correct Answer:
Option C = -1.0Ω
A cell can supply current of 0.8A and 0.4A through a 2Ω and a 3Ω resistors respectively. Calculate the internal resistance of the cell.
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