MCQs on Conductors and insulators
Q1: Which of the following is the most conductive element?
a) Copper
b) Iron
c) Silicon
d) Silver
Answer: (d) Silver
Q2: A material that has zero resistance is called
a) Insulator
b) Conductor
c) Superconductor
d) semiconductor
Answer: (c) Superconductors
Q3: 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
Answer: (a) Copper is a good conductor of electricity
Q4: Which among the following is not an insulator?
a) Wool
b) Plastic
c) Silver
d) Paper
Answer: (c) Silver
Q5: What is the inverse of resistance called?
a) Inductance
b) Conductance
c) Resistivity
d) permittivity
Answer: (b) Conductance
Q6: The energy gap is maximum in
a) Conductors
b) Semiconductors
c) Insulators
d) Superconductors
Answer: (c) Insulators
Q7: 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
Answer: (a) Allow the flow of heat
Q8: Good conductors have many loosely bound
a) Atoms
b) Protons
c) Molecules
d) Electrons
Answer: (d) Electrons
Q9: The resistance of the conductor is directly proportional to
a) Length
b) Area of cross-section
c) Temperature
d) resistivity
Answer: (a) Length
Q10: With the increase in temperature the resistance of semiconductors
a) Decreases
b) Increases
c) Remains constant
d) Initially increases and then decreases
Answer: (a) Decreases
Q11: Which of the following is an insulator?
a) Brass
b) Copper
c) Gold
d) Glass
Answer: (d) Glass
