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An Intiative by Sri Chaitanya
a
Potentiometer is usually used for comparing resistances and not voltages
b
The battery that runs the potentiometer should have voltage of 8V
c
The battery of potentiometer can have a voltage of 15 V and R adjusted so that the potential drop across the wire slightly exceeds 10 V
d
The first portion of 50 cm of wire itself should have a potential drop of 10 V
answer is B.
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