Assertion: For measuring resistance of an ionic solution an AC source is used. Reason: Concentration of ionic solution will change if DC source is used. [NCERT Exemplar]

Assertion: For measuring resistance of an ionic solution an AC source

1.	Assertion: For measuring resistance of an ionic solution an AC source is used. Reason: Concentration of ionic solution will change if DC source is used. [NCERT Exemplar]
Answer» 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.