Explore topic-wise MCQs in Physics.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the reciprocal of resistance of a material called? Give its unit.

A. Conductance, ohm<sup>-1</sup>
B. Conductivity, ohm<sup>-1</sup> m<sup>-1</sup>
C. Conductance, ohm<sup>-1</sup> m<sup>-1</sup>
D. Conductivity, ohm<sup>-1</sup>
Answer» B. Conductivity, ohm<sup>-1</sup> m<sup>-1</sup>
Discussion
2.

Identify the factor which does not depend on the resistance of a conductor.

A. Nature of material
B. Area of cross-section
C. Length
D. Viscosity
Answer» E.
Discussion
3.

Give the SI unit of current density and its dimensional formula.

A. Am<sup>-2</sup>, [A<sup>1</sup>L<sup>-2</sup>]
B. Am<sup>2</sup>, [A<sup>1</sup>L<sup>2</sup>]
C. Am<sup>-1</sup>, [A<sup>1</sup>L<sup>-1</sup>]
D. Am<sup>1</sup>, [A<sup>1</sup>L<sup>1</sup>]
Answer» B. Am<sup>2</sup>, [A<sup>1</sup>L<sup>2</sup>]
Discussion
4.

What is the reciprocal of resistivity of a material called? Give its unit.

A. Conductance, ohm<sup>-1</sup>
B. Conductivity, ohm<sup>-1</sup> m<sup>-1</sup>
C. Conductance, ohm<sup>-1</sup> m<sup>-1</sup>
D. Conductivity, ohm<sup>-1</sup>
Answer» C. Conductance, ohm<sup>-1</sup> m<sup>-1</sup>
Discussion
5.

Give the SI unit of resistivity.

A. ohm/metre<sup>2</sup>
B. ohm metre<sup>2</sup>
C. ohm metre
D. ohm/metre
Answer» D. ohm/metre
Discussion