Selected MCQ

Current Question
The electric potential inside a conductor in electrostatic equilibrium is:
  • A. Zero
  • B. Maximum
  • C. Constant
  • D. Infinite
Correct Answer: C
Explanation:
Charges redistribute until potential is uniform inside.
Related Question 1
Which device measures electric power?
  • A. Voltmeter
  • B. Ammeter
  • C. Wattmeter
  • D. Ohmmeter
Correct Answer: C
Explanation:
Wattmeter measures power.
Related Question 2
Which energy is potential?
  • A. Motion
  • B. Stored
  • C. Heat
  • D. Light
Correct Answer: B
Explanation:
Potential energy is stored energy.
Related Question 3
Which metal is best conductor?
  • A. Iron
  • B. Copper
  • C. Silver
  • D. Gold
Correct Answer: C
Explanation:
Silver has highest conductivity.
Related Question 4
Which material is semiconductor?
  • A. Copper
  • B. Silicon
  • C. Rubber
  • D. Glass
Correct Answer: B
Explanation:
Silicon has intermediate conductivity.
Related Question 5
Which compound conducts electricity in solution?
  • A. Sugar
  • B. Salt
  • C. Alcohol
  • D. Benzene
Correct Answer: B
Explanation:
Ionic compounds dissociate into ions.