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4 cells of identical emf E and internal ...

4 cells of identical emf E and internal resistance r, are connected in series to a variable resistor. The following graph shows the variation of termical voltage of the combination with the current output. Fig. MTP 1.2.
(a) What is the emf of each cell used?
(b) For what current from the cells, does maximum power dissipation occur in the circuit?
(c) Calculate the internal resistance of each cell.

Text Solution

Verified by Experts

(a) 1.4V (b) 1A (c) `0.7 Omega`. [See Hint Q. 80, Page 2//95]`
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