1.

Assertion(A) For measuring resistance of an ionic solution an AC sourceis used. Reason (R) Concentration of ionic solution will will chagne if DC source is used.

Answer»

Both assertion and reason are true and the reason is the correct explanation of assertion.
Both assertion and reason are true and reason is not the correct explanation of assertion.
Assertion is true but the reason is FALSE.
Both assertion and reason are false.

Solution :Both assertion and reason are correct and reason is the correct explanation of assertion.
Concentration of IONIC solution changes on using DC current as a source of energy while on passing AC current concentration does not CHANGE Hence AC source is used for MEASURING resistances.


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