[solo20]

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1- There are five cells connected in series each having internal resistance of 0.5 ohm .find the e.m.f of each cell if they provide 1.5 A current.
2- sixteen cells each having an internal resistance of 0.4 ohm when joined in parallel send a current of 2.72 A through an external resistance of 0.3 ohm.find the e.m.f of each cell
3- six cells each of e.m.f 2V and internal resistance 0.2ohm connected in parallel across an external resistor of 5 ohm. what is the current in the circuit
4-four cells each having an e.m.f of 1.3V and internal resistance 0.025 ohm are connected in series across an external resistance of 12 ohm.find the current supplied by the battery

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