CG Vyapam Science MCQ Chapter Wise For Prayogshala Pricharak

Chapter 24: Electric Current and Circuit – Important MCQs

1. SI unit of electric current is:
   A. Ampere
   B. Volt
   C. Ohm
   D. Coulomb
   ✔️ Answer: A. Ampere
2. Electric current is measured by:
   A. Voltmeter
   B. Ammeter
   C. Galvanometer
   D. Potentiometer
   ✔️ Answer: B. Ammeter
3. Which device is used to measure potential difference?
   A. Ammeter
   B. Voltmeter
   C. Galvanometer
   D. Rheostat
   ✔️ Answer: B. Voltmeter
4. Ohm’s law states the relation between:
   A. Current and power
   B. Current and resistance
   C. Voltage and current
   D. Power and energy
   ✔️ Answer: C. Voltage and current
5. SI unit of resistance is:
   A. Volt
   B. Ohm
   C. Ampere
   D. Watt
   ✔️ Answer: B. Ohm
6. What is the formula for electric power?
   A. P = VI
   B. P = I/R
   C. P = V/R
   D. P = I²V
   ✔️ Answer: A. P = VI
7. A battery is a combination of:
   A. Resistors
   B. Capacitors
   C. Cells
   D. Diodes
   ✔️ Answer: C. Cells
8. When resistance increases, the current:
   A. Increases
   B. Decreases
   C. Remains the same
   D. Becomes zero
   ✔️ Answer: B. Decreases
9. The current in a circuit is directly proportional to:
   A. Resistance
   B. Potential difference
   C. Power
   D. Charge
   ✔️ Answer: B. Potential difference
10. What is the current flowing when 10V potential difference is applied across 5Ω resistor?
    A. 0.5 A
    B. 2 A
    C. 5 A
    D. 10 A
    ✔️ Answer: B. 2 A