Home
SELF STUDY
BrowsePracticeTestsPlaylistDoubts & solutionsFree live classesOther courses

IIT JEE

Practice

Current Electricity

Kirchhoff's Law

Quick practice

Question 1 of 5

Two resistors with temperature coefficient of resistance a1 and a2 have respective values of resistance R1 and R2 at 0°C. What is the temperature coefficient of the compound resistor consisting of the two resistors connected in parallel?

A

\frac{\alpha_1+\alpha_2}{2}

B

\frac{2 \alpha_1+\alpha_2}{\alpha_1+\alpha_2}

C

\frac{R_1 \alpha_1+R_2 \alpha_2}{R_1+R_2}

D

\frac{\alpha_1 R_2+\alpha_2 R_1}{R_1+R_2}

Get unlimited practice with IIT JEE subscription

pick

Boost your performance with adaptive practice tests

pick

Practice every concept in the syllabus

pick

Compare your speed and accuracy with your peers

pick

Download the app and practice on the go