In the circuit shown below, each battery is 5V and has an internal resistance of 0.2 ohm. The reading in the ideal voltmeter V is .
Text Solution
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All the eight batteries are in series Total emf of eight betteries `= 6 xx 8 = 48V` Total initialresistance of eight batteries `= 8 xxx 0.2 = 1.4 Omega` current `t = (48)/(1.6) = 30A` Reading of veltmeter = terminal potential different across one cell = mgf - voltage across initial resistance of time of one cell `= 6 - 30 xx 0.2 = 0 V`
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