Conductor and Conductance MCQs

11. Which of the following is a good conductor of electricity?

• A) Rubber
• B) Glass
• C) Copper
• D) Wood
• Answer: C

12. Conductance is the reciprocal of:

• A) Voltage
• B) Resistance
• C) Current
• D) Power
• Answer: B

13. Which of the following materials is an insulator?

• A) Aluminum
• B) Silver
• C) Plastic
• D) Iron
• Answer: C

14. The SI unit of conductance is:

• A) Ohm
• B) Siemens
• C) Farad
• D) Coulomb
• Answer: B

15. What happens to the conductance of a conductor as its temperature increases?

• A) Increases
• B) Decreases
• C) Remains constant
• D) Doubles
• Answer: B

16. Which factor affects the conductance of a conductor?

• A) Length
• B) Cross-sectional area
• C) Material
• D) All of the above
• Answer: D

17. Which of the following is a poor conductor of electricity?

• A) Gold
• B) Copper
• C) Iron
• D) Wood
• Answer: D

18. The conductance of an electrolyte solution increases with:

• A) Decreasing temperature
• B) Increasing concentration
• C) Decreasing concentration
• D) Increasing voltage
• Answer: B

19. The unit of conductivity is:

• A) Ohm
• B) Ohm-meter
• C) Siemens per meter
• D) Coulomb
• Answer: C

20. Which of the following metals has the highest electrical conductance?

• A) Copper
• B) Silver
• C) Gold
• D) Aluminum
• Answer: B