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a
Potential difference between terminals of a non ideal battery can never be greater than the Emf
b
If a non-ideal battery is short circuited by a wire, heat generated in the wire is less than electric energy developed in the battery
c
Emf of a battery is first measured by a potentiometer and then by connecting an ideal voltmeter across it. Both the measurements are not equally correct.
d
Emf of an ideal battery is first measured by a potentiometer and then by a ideal voltmeter. Both the measurements are equally correct
answer is B, C.
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