- What is the unit of electrical current?
Ampere (A)
Volt (V)
Watt (W)
Power (P)
Answer: Ampere
2. What does LED stand for?
Light Emitting Diode
Light Emitting Device
Low Energy Device
Laser Emitting Diode
Answer: Light Emitting Diode
3. Which of the following is not an example of a passive electronic component?
Resistor
Capacitor
Transistor
Inductor
Answer: Transistor
4. What is the function of a diode in an electronic circuit?
To increase the voltage
To decrease the voltage
To control the current flow
To rectify the current
Answer: To rectify the current
5. Choose the right formula for calculating electrical power?
P = VI
P = IR
P = V/R
P = V/I
Answer: P = VI
6. What is the Function of alternating current (AC) and direct current (DC)?
AC flows in only one direction, while DC flows in both directions.
AC changes direction periodically, while DC flows in only one direction.
AC and DC are the same thing.
AC and DC are completely different types of electricity.
Answer: AC changes direction periodically, while DC flows in only one direction.
7. What is the use of a transformer in an electronic circuit?
To amplify the signal
To filter the signal
To convert AC to DC
To change the voltage level
Answer: To change the voltage level
8. Which type of electronic component stores electrical charge?
Resistor
Capacitor
Transistor
Diode
Answer: Capacitor
9. Choose the memory Chip that can be programmed and erased electronically?
RAM
ROM
EPROM
DRAM
Answer: EPROM
10. What is the purpose of a transistor in an electronic circuit?
To convert AC to DC
To amplify or switch electronic signals
To filter electronic signals
To store electronic signals
Answer: To amplify or switch electronic signals