Assertion-Reason on Dry Cell EMF – Rankers Physics
Topic: Current Electricity
Subtopic: Combination of Batteries

Assertion-Reason on Dry Cell EMF

Assertion (A): A larger dry cell has higher emf.
Reason (R): The emf of a dry cell is proportional to its size.
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

The electromotive force (EMF) of a cell depends only on the nature of the electrodes and electrolyte, not its size. Size affects internal resistance and current capacity. Both assertion and reason are incorrect.

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