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M3476 · [1]
The terminal potential difference V of a cell varies linearly with the current I it supplies. When I = 0.50 A , V = 5.6 V ; when I = 2.0 A , V = 4.4 V . What is the internal resistance of the cell?
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A cell of emf 9.0 V and internal resistance 1.5 Ω is connected to a resistor of resistance 3.0 Ω . The lost volts of the cell are
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