Ex. 68 : The length of potentiometer wire is 4 m and its resistance is 18 2. A battery if e.m.f. 2 V and internal resistance 2 Nis connected across the wire. Calculate the potential gradient. If the balancing length for a cell of e.m.f. E1 200 cm, calculate E1

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Ex. 68 : The length of potentiometer wire is 4 m
and its resistance is 18 Q . A battery if e.m.f. 2
V and internal resistance 2 Nis connected
across the wire. Calculate the potential
gradient. If the balancing length for a cell of
e.m.f. E1 200 cm, calculate E1
Transcribed Image Text:Ex. 68 : The length of potentiometer wire is 4 m and its resistance is 18 Q . A battery if e.m.f. 2 V and internal resistance 2 Nis connected across the wire. Calculate the potential gradient. If the balancing length for a cell of e.m.f. E1 200 cm, calculate E1
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