Multiple choice

Consider the following: Assertion: The conductivity of a superconductor is infinite. Reason: The resistance of superconductors is zero at low temperatures.

Which of the following is correct?

  1. The assertion is false.

  2. The reason is false.

  3. Both the assertion and the reason are false.

  4. Both the assertion and the reason are true and the reason is an explanation of the assertion.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Conductivity is the reciprocal of resistance. The resistance of superconductors is zero at low temperatures. So, the conductivity of a superconductor is infinite.