3RD TERM PHYSICS SS 2
  • 1. The electric field intensity at a point is defined as the_____
A) force per unit positive test charge
B) electric potential per unit charge
C) charge per unit area
D) work done per unit distance
  • 2. The SI unit of electric field intensity is________
A) C/N
B) N/C
C) J/C
D) V
  • 3. The force between two point charges is given by______
A) Coulomb's law
B) Ohm's law
C) Newton's law
D) Faraday's law
  • 4. Two like charges placed close to each other will______
A) repel
B) remain stationary
C) attract
D) produce current
  • 5. A magnetic field is produced by________
A) sound waves
B) stationary charges only
C) heat energy
D) moving electric charges
  • 6. The SI unit of magnetic flux density is_______________
A) Ampere
B) Weber
C) Henry
D) Tesla
  • 7. Which rule gives the direction of the magnetic field around a straight current-carrying conductor? A. B. C. D.
A) Lenz's Law
B) Fleming's Left-Hand Rule
C) Right-Hand Grip Rule
D) Fleming's Right-Hand Rule
  • 8. The material commonly used as the core of an electromagnet is__________
A) brass
B) aluminium
C) soft iron
D) steel
  • 9. The strength of an electromagnet can be increased by_________
A) reducing the current
B) removing the core
C) increasing the current
D) reducing the number of turns
  • 10. Electromagnetic induction was discovered by__________
A) James Watt
B) Albert Einstein
C) Michael Faraday
D) Isaac Newton
  • 11. Electromagnetic induction occurs when there is__________
A) no current in a circuit
B) relative motion between a magnet and a conductor
C) a stationary magnet near a coil
D) constant resistance
  • 12. The direction of induced current is determined by_______
A) Newton's law
B) Fleming's Right-Hand Rule
C) Fleming's Left-Hand Rule
D) Ohm's law
  • 13. An electric generator converts_________
A) heat energy to electrical energy
B) electrical energy to mechanical energy
C) light energy to heat energy
D) mechanical energy to electrical energy
  • 14. An electric motor converts_________
A) sound energy to electrical energy
B) mechanical energy to electrical energy
C) heat energy to electrical energy
D) electrical energy to mechanical energy
  • 15. Electromagnetic waves can travel through_______
A) gases only
B) vacuum
C) solids only
D) liquids only
  • 16. Which of the following has the longest wavelength?
A) Gamma rays
B) X-rays
C) Radio waves
D) Ultraviolet rays
  • 17. Which electromagnetic wave is commonly used in satellite communication?
A) Infrared rays
B) Microwaves
C) X-rays
D) Gamma rays
  • 18. Which of the following is not an electromagnetic wave?
A) Sound waves
B) Microwaves
C) Radio waves
D) X-rays
  • 19. Electromagnetic waves all travel in a vacuum at approximately______
A) 3.0 x 10⁷ m/s
B) 3.0 x 10⁹ m/s
C) 3.0 x 10⁶ m/s
D) 3.0 x 10⁸m/s
  • 20. The electric field around a positive charge is directed__________
A) towards the charge
B) anticlockwise
C) away from the charge
D) clockwise
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