Question

Q19. Assertion(A)-The resistivity of conductor increases with the increasing of temperature.
Reasons-(R)- The resistivity is the reciprocal of the conductivity.
(a) Both A and Rare true and R is the correct explanation of A
(b) Both A and R are true, but Ris not the correct explanation of A
(c) A is true, but R is false
(d) Both A and Rare false​

Answer 1

Answer :

⇒ A  is false, but R is true .

⇒ Resistivity of a conductor is inversely proportional to temperature. So, when there is increase in temperature, the resistivity decreases .

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