Multiple Choice Questions On Basic Electronics

1. What is a p-n junction?
   • A. A type of resistor
   • B. A type of capacitor
   • C. A type of semiconductor
   • D. A type of diode

Answer: D. A type of diode

2. Which of the following materials is a semiconductor?
   • A. Copper
   • B. Aluminum
   • C. Silicon
   • D. Iron

Answer: C. Silicon

3. What is the most common type of semiconductor used in electronic devices?
   • A. N-type
   • B. P-type
   • C. Intrinsic
   • D. Extrinsic

Answer: D. Extrinsic

4. What is the function of a diode in an electronic circuit?
   • A. To regulate voltage
   • B. To amplify signals
   • C. To store data
   • D. To allow current to flow in only one direction

Answer: D. To allow current to flow in only one direction

5. What is the difference between a p-type and an n-type semiconductor?
   • A. The number of electrons in the outermost shell
   • B. The number of protons in the nucleus
   • C. The type of impurity atom added to the semiconductor
   • D. The size of the crystal lattice structure

Answer: C. The type of impurity atom added to the semiconductor

6. What is a transistor?
   • A. A type of diode
   • B. A type of capacitor
   • C. A type of amplifier
   • D. A type of resistor

Answer: C. A type of amplifier

7. What is the most common type of transistor?
   • A. Bipolar junction transistor (BJT)
   • B. Field-effect transistor (FET)
   • C. Metal-oxide-semiconductor field-effect transistor (MOSFET)
   • D. Junction field-effect transistor (JFET)

Answer: A. Bipolar junction transistor (BJT)

8. What is the difference between an npn and pnp transistor?
   • A. The direction of current flow
   • B. The type of impurity atoms added to the semiconductor
   • C. The size of the crystal lattice structure
   • D. The number of electrons in the outermost shell

Answer: B. The type of impurity atoms added to the semiconductor

9. What is the function of a diode in a rectifier circuit?
   • A. To amplify signals
   • B. To regulate voltage
   • C. To store data
   • D. To convert AC to DC

Answer: D. To convert AC to DC

10. What is the basic structure of a p-n junction?
    • A. Two parallel plates separated by a dielectric material
    • B. Two semiconducting materials sandwiching an insulating layer
    • C. Two semiconducting materials doped with impurities to create a depletion region
    • D. Two metal plates connected by a wire

Answer: C. Two semiconducting materials doped with impurities to create a depletion region