300+ TOP MCQs on Conductors and insulators and Answers

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MCQs on Conductors and insulators :

1. Which of the following is the most conductive element?
(A) Copper
(B) Iron
(C) Silicon
(D) Silver

2. A material that has zero resistance is called
(A) Insulator
(B) Conductor
(C) Superconductor
(D) semiconductor

3. Why is copper a preferred choice in making electrical wires?
(A) Copper is a good conductor of electricity
(B) Poor conductors of electricity
(C) Insulators
(D) Superconductors

4. Which among the following is not an insulator?
(A) Wool
(B) Plastic
(C) Silver
(D) Paper

5. What is the inverse of resistance called?
(A) Inductance
(B) Conductance
(C) Resistivity
(D) permittivity

6. The energy gap is maximum in
(A) Conductors
(B) Semiconductors
(C) Insulators
(D) Superconductors

7. Conductors are materials that allow
(A) Allow the flow of heat
(B) Does not allow heat to flow
(C) Allows cold to flow
(D) Stops cold from passing through

8. Good conductors have many loosely bound
(A) Atoms
(B) Protons
(C) Molecules
(D) Electrons

9. The resistance of the conductor is directly proportional to
(A) Length
(B) Area of cross-section
(C) Temperature
(D) resistivity

10. With the increase in temperature the resistance of semiconductors
(A) Decreases
(B) Increases
(C) Remains constant
(D) Initially increases and then decreases