John: Where______________, Ephrem?
Ephrem: I live in Adama city.
A. are you living
B. do you live

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Physics Questions on
• Electricity and Magnetism: Electric charge, circuits, Ohm's law, magnetic fields

1. What is the SI unit of electric charge?
   a) Ampere
   b) Volt
   c) Coulomb
   d) Ohm

2. Which of the following is NOT a good conductor of electricity?
   a) Copper
   b) Silver
   c) Rubber
   d) Aluminum

3. Ohm's law states the relationship between:
   a) Voltage, current, and resistance
   b) Voltage, power, and current
   c) Current, resistance, and power
   d) Power, resistance, and voltage

4. In a series circuit, the is the same across all components.
   a) Current
   b) Voltage
   c) Resistance
   d) Power

5. In a parallel circuit, the is the same across all components.
   a) Current
   b) Voltage
   c) Resistance
   d) Power

6. What is the unit of electrical resistance?
   a) Ampere
   b) Volt
   c) Coulomb
   d) Ohm

7. Materials that offer very high resistance to the flow of electric current are called:
   a) Conductors
   b) Insulators
   c) Semiconductors
   d) Superconductors

8. Like charges  and unlike charges .
   a) Attract, repel
   b) Repel, attract
   c) Attract, attract
   d) Repel, repel

9. A magnetic field is produced by:
   a) Moving electric charges
   b) Stationary electric charges
   c) Both moving and stationary electric charges
   d) None of the above

10. The direction of the magnetic field around a current-carrying wire can be determined by:
    a) Ohm's law
    b) The right-hand rule
    c) The left-hand rule
    d) Faraday's law

11. Which of the following is the SI unit for magnetic field strength?
    a) Weber
    b) Tesla
    c) Henry
    d) Faraday

12. What happens when a magnet is broken in half?
    a) It loses its magnetism.
    b) It creates two smaller magnets, each with a north and south pole.
    c) One half becomes a north pole, and the other half becomes a south pole.
    d) It depends on the material of the magnet.

13. Which of these is NOT a type of circuit?
    a) Series
    b) Parallel
    c) Combined
    d) Linear

14. What is the formula for calculating power in an electrical circuit?
    a) P = VI
    b) P = I²R
    c) P = V²/R
    d) All of the above

15. Which of the following describes the force experienced by a charged particle moving in a magnetic field?
    a) The force is always parallel to the magnetic field.
    b) The force is always perpendicular to both the magnetic field and the velocity of the particle.
    c) The force is always parallel to the velocity of the particle.
    d) The force is zero if the particle is stationary.

Answers:

1. c)
2. c)
3. a)
4. a)
5. b)
6. d)
7. b)
8. b)
9. a)
10. b)
11. b)
12. b)
13. d)
14. d)
15. b)

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What is the derivative of f (x) = x + 1?

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