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MCQs on Conductors and insulators

MCQs on Conductors and insulators

Q1: Which of the following is the most conductive element?

  1. Copper
  2. Iron
  3. Silicon
  4. Silver

Answer:(d) Silver

Q2: A material that has zero resistance is called

  1. Insulator
  2. Conductor
  3. Superconductor
  4. semiconductor

Answer:(c) Superconductors

Q3: Why is copper a preferred choice in making electrical wires?

  1. Copper is a good conductor of electricity
  2. Poor conductors of electricity
  3. Insulators
  4. Superconductors

Answer:(a) Copper is a good conductor of electricity

Q4: Which among the following is not an insulator?

  1. Wool
  2. Plastic
  3. Silver
  4. Paper

Answer:(c) Silver

Q5: What is the inverse of resistance called?

  1. Inductance
  2. Conductance
  3. Resistivity
  4. permittivity

Answer:(b) Conductance

Q6: The energy gap is maximum in

  1. Conductors
  2. Semiconductors
  3. Insulators
  4. Superconductors

Answer:(c) Insulators

Q7: Conductors are materials that allow

  1. Allow the flow of heat
  2. Does not allow heat to flow
  3. Allows cold to flow
  4. Stops cold from passing through

Answer: (a) Allow the flow of heat

Q8: Good conductors have many loosely bound

  1. Atoms
  2. Protons
  3. Molecules
  4. Electrons

Answer:(d) Electrons

Q9: The resistance of the conductor is directly proportional to

  1. Length
  2. Area of cross-section
  3. Temperature
  4. resistivity

Answer: (a) Length

Q10: With the increase in temperature the resistance of semiconductors

  1. Decreases
  2. Increases
  3. Remains constant
  4. Initially increases and then decreases

Answer: (a) Decreases

Q11: Which of the following is an insulator?

  1. Brass
  2. Copper
  3. Gold
  4. Glass

Answer:(d) Glass


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