SS3 First Term Basic Electronics Past Questions And Answers
20 basic electronics questions for SS3 First Term with options and answers:
Question: What is the SI unit of electrical resistance?
A) Watt
B) Ohm
C) Volt
D) Ampere
Answer: B) Ohm
Question: In a series circuit, the total resistance is equal to:
A) Sum of individual resistances
B) Product of individual resistances
C) Difference of individual resistances
D) Reciprocal of individual resistances
Answer: A) Sum of individual resistances
Question: Which component stores electrical charge in a circuit?
A) Resistor
B) Capacitor
C) Inductor
D) Diode
Answer: B) Capacitor
Question: What does LED stand for in electronics?
A) Light Emitting Diode
B) Long Electric Device
C) Low Energy Detector
D) Liquid Electrolytic Display
Answer: A) Light Emitting Diode
Question: The symbol ‘DC’ in electrical terms stands for:
A) Digital Current
B) Direct Current
C) Dynamic Circuit
D) Dual Capacitance
Answer: B) Direct Current
Question: Which electronic component is used to amplify signals in a circuit?
A) Capacitor
B) Resistor
C) Transistor
D) Diode
Answer: C) Transistor
Question: What is the function of a diode in an electrical circuit?
A) Amplification
B) Rectification
C) Inductance
D) Oscillation
Answer: B) Rectification
Question: The unit of electric current is:
A) Ohm
B) Ampere
C) Volt
D) Watt
Answer: B) Ampere
Question: What does AC stand for in electrical terms?
A) Alternating Current
B) Amplified Circuit
C) Analog Capacitance
D) Automated Control
Answer: A) Alternating Current
Question: The basic building block of electronic circuits is:
A) Transistor
B) Capacitor
C) Resistor
D) Diode
Answer: C) Resistor
Question: What does PWM stand for in electronics?
A) Pulse Width Modulation
B) Power Watt Measurement
C) Parallel Wave Manipulation
D) Phase Width Modulation
Answer: A) Pulse Width Modulation
Question: A circuit with only one path for current flow is called:
A) Series circuit
B) Parallel circuit
C) Complex circuit
D) Open circuit
Answer: A) Series circuit
Question: Which material is commonly used as a semiconductor in electronic devices?
A) Copper
B) Aluminum
C) Silicon
D) Gold
Answer: C) Silicon
Question: What is the purpose of a fuse in an electrical circuit?
A) To amplify signals
B) To regulate voltage
C) To protect against overcurrent
D) To store electrical charge
Answer: C) To protect against overcurrent
Question: The Ohm’s law equation is expressed as:
A) V = IR
B) I = VR
C) R = VI
D) P = VI
Answer: A) V = IR
Question: Which device is used to store electrical energy in a circuit?
A) Resistor
B) Capacitor
C) Inductor
D) Diode
Answer: B) Capacitor
Question: What is the function of a transistor in an amplifier circuit?
A) Store electrical charge
B) Rectify the signal
C) Amplify the signal
D) Control voltage
Answer: C) Amplify the signal
Question: The unit of electric power is measured in:
A) Ampere
B) Ohm
C) Watt
D) Volt
Answer: C) Watt
Question: Which of the following is a passive electronic component?
A) Transistor
B) Capacitor
C) Diode
D) LED
Answer: B) Capacitor
Question: What is the purpose of an inductor in an electrical circuit?
A) Store electrical charge
B) Amplify signals
C) Control current flow
D) Convert AC to DC
Answer: C) Control current flow.
