What is the SI unit of resistance?
A) Ampere
B) Volt
C) Ohm
D) Watt
Which component is used to store electrical energy?
A) Resistor
B) Capacitor
C) Transistor
D) Inductor
Ohm’s Law states that voltage is equal to:
A) Current × Resistance
B) Resistance / Current
C) Power × Time
D) Current / Resistance
Which of the following is a semiconductor material?
A) Copper
B) Silicon
C) Iron
D) Aluminium
Which electronic component allows current to flow in only one direction?
A) Resistor
B) Capacitor
C) Diode
D) Inductor
What is the main function of a transistor?
A) Store charge
B) Amplify signals
C) Resist current flow
D) Convert AC to DC
Which of the following is a passive component?
A) Transistor
B) Diode
C) Resistor
D) Microcontroller
What type of circuit has only one path for current flow?
A) Parallel circuit
B) Series circuit
C) Mixed circuit
D) Open circuit
The unit of capacitance is:
A) Henry
B) Farad
C) Ohm
D) Watt
Which component opposes changes in current flow?
A) Inductor
B) Capacitor
C) Resistor
D) Diode
Which circuit element is used to convert AC to DC?
A) Transformer
B) Diode
C) Resistor
D) Capacitor
Which law states that total voltage in a closed loop is equal to the sum of voltage drops?
A) Ohm’s Law
B) Kirchhoff’s Voltage Law
C) Faraday’s Law
D) Coulomb’s Law
A device that stores electrical charge temporarily is called:
A) Transformer
B) Capacitor
C) Transistor
D) Inductor
Which unit is used to measure electric current?
A) Volt
B) Ampere
C) Ohm
D) Henry
Which type of diode is used in voltage regulation?
A) LED
B) Schottky Diode
C) Zener Diode
D) Tunnel Diode
Which component is commonly used to control high power circuits?
A) Resistor
B) Diode
C) Transistor
D) LED
What does a transformer do?
A) Converts DC to AC
B) Converts AC voltage levels
C) Stores electrical charge
D) Blocks current flow
Which of the following is a source of DC voltage?
A) Generator
B) Transformer
C) Battery
D) Inductor
A device that converts electrical energy into mechanical energy is called:
A) Transformer
B) Motor
C) Generator
D) Rectifier
Which component is used to step up or step down AC voltage?
A) Resistor
B) Capacitor
C) Transformer
D) Transistor
Which law states that the total current entering a junction is equal to the total current leaving?
A) Kirchhoff’s Current Law
B) Ohm’s Law
C) Newton’s Law
D) Joule’s Law
Which of the following is NOT a semiconductor device?
A) Transistor
B) LED
C) Inductor
D) Diode
The process of increasing signal strength in an electronic circuit is called:
A) Rectification
B) Amplification
C) Resistance
D) Induction
Which of the following devices converts light into electrical energy?
A) LED
B) Photodiode
C) Inductor
D) Transformer
What is the function of a fuse in an electrical circuit?
A) Amplify signals
B) Store energy
C) Protect from overcurrent
D) Increase resistance
Which component controls the voltage in a circuit?
A) Inductor
B) Transformer
C) Voltage regulator
D) Transistor
What type of current flows in one direction only?
A) Alternating Current (AC)
B) Direct Current (DC)
C) Pulsating Current
D) Residual Current
What is the function of an LED?
A) Store charge
B) Emit light
C) Increase current
D) Block voltage
Which of the following is measured in Hertz (Hz)?
A) Voltage
B) Frequency
C) Resistance
D) Capacitance
What is the primary function of an oscillator?
A) Generate continuous AC signals
B) Block current flow
C) Store electrical energy
D) Step up voltage
