NEET Physics Question - Current Electricity - Variation of Resistance with Temperature

Assertion (A): As temperature of an electrolyte is increased, its conductivity increases.

Reason (R): Increase of temperature makes the electrolyte less viscous.

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:

Assertion (A) is true. For electrolytes, increased temperature leads to more ion dissociation and reduced viscosity. Reason (R) is true as increased temperature reduces viscosity. (R) correctly explains (A) as lower viscosity allows ions to move more freely, increasing conductivity.

Rankers Physics

Electrolyte Conductivity and Temperature

Solution:

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