1. The Coulomb is:
- A) The quantity of electricity that flows past a given point in an electric circuit when a current of one ampere is maintained for one second.
- B) The difference of electrical charge between two points in an electrical circuit.
- C) The opposition to the charge between two points in a conductor.
- D) A measure of a material’s ability to conduct an electrical current.
- E) The rate at which electrical energy is transferred at a given point over a set period of time.
Correct Answer: A
2. Electrical Power is:
- A) The quantity of electricity that flows past a given point in an electric circuit when a current of one ampere is maintained for one second.
- B) The difference of electrical charge between two points in an electrical circuit.
- C) The opposition to the charge between two points in a conductor.
- D) A measure of a material’s ability to conduct an electrical current.
- E) The rate at which electrical energy is transferred at a given point over a set period of time.
Correct Answer: E
3. Which is the correct formula for Charge:
- A) Current × time
- B) Energy / Charge
- C) Voltage ÷ Current
- D) Voltage × Current
- E) Power × time
Correct Answer: A
4. Which of the following quantities has the SI unit as Watt?
- A) Resistance
- B) Charge
- C) Conductance
- D) Power
- E) Potential Difference
Correct Answer: D
5. Which of the following quantities has the unit Ohm?
- A) Resistance
- B) Charge
- C) Conductance
- D) Power
- E) Potential Difference
Correct Answer: A
6. If a current of 3A flows for 5 minutes, find the quantity of charge:
- A) 900C
- B) 15C
- C) 8C
- D) 5C
- E) 3C
Correct Answer: A
Explanation:
7. What is the potential difference when an electronic circuit has a power of 20W with a charge of 5 Coulombs?
- A) 4V
- B) 5V
- C) 20V
- D) 25V
- E) 100V
Correct Answer: A
Explanation:
8. What is the unit of potential difference?
- A) Ohm
- B) Volt
- C) Watt
- D) Ampere
- E) Coulomb
Correct Answer: B
9. What is the resistance of a circuit when a 10V supply causes a current of 0.5A to flow?
- A) 20 Ohms
- B) 0.05 Ohms
- C) 0.05 Amps
- D) 20 Volts
- E) 0.05 Volts
Correct Answer: A
Explanation:
10. A power supply provides a DC source of 10V with a current of 2A for 20 minutes. How much power is used?
- A) 1W
- B) 2W
- C) 5W
- D)10W
- E) 20W
Correct Answer: E
Explanation:
