A series combination of 10 identical cells, each of EMF E and internal resistance 2ohm are connected to a resistance 20ohm So as to send a current of 2A through it. The value of E is
1)8V
(2) 4 V
(3) 4.4 V
(4) 80V
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Explanation:
80 volts i think so 20+20×2
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