Question

Assertion: When a battery is short circuited, the terminal voltage is zero.

Reason: In short circuit, the current is zero.

Answer 1

Practical scenario: The answer is that the battery is not short circuited in true sense. The wire you are using to connect the battery terminals has some resistance however small it may be. Therefore, a huger current flows across that resistance. Hence the battery terminal voltage is not zero

Answer 2

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Practical scenario: The answer is that the battery is not short circuited in true sense. The wire you are using to connect the battery terminals has some resistance however small it may be. Therefore, a huger current flows across that resistance. Hence the battery terminal voltage is not zero.

In case of a short-circuit batter, the external resistance R will be zero. thus, current I=

r

E



=0 where E= emf of batter and r= internal resistance of battery.

Terminal voltage, V=IR=I(0)=0 as R=0 .