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