Assertion: At higher temperatures, metal wires have a greater chance of short circuiting.

Reason: Both resistivity and resistance of a material vary with temperature.

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Both Assertion and Reason are true and Reason is the correct explanation of the Assertion.

Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

Assertion is true but Reason is false

Assertion is false but Reason is true

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Both Assertion and Reason are true, and Reason is the correct explanation of the Assertion.
Assertion: A property by which a metal or a conductor opposes the flow of electric current through it is known as resistance. It is denoted as (R). A material's resistance increases as its temperature increases. At high temperatures, the possibility of short circuits increases as the material's resistivity and resistance increase. Mathematically resistance is represented as,

R = ρ \frac{l}{A}

.
Reason: Temperature affects the resistance and resistivity of metal wire. A substance's ability to resist current flow is known as its resistance, and a conductor's resistance is inversely related to temperature.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE