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.
FAQs
What topics are usually covered in SS3 first term Basic Electronics past questions?
SS3 first term Basic Electronics past questions often cover fundamental concepts such as Ohm’s Law, series and parallel circuits, resistors, capacitors, diodes, transistors, and basic electronic symbols. Some questions may also include circuit analysis, calculations of voltage, current, and resistance, as well as identifying components in a given circuit diagram.
How can I use past questions to prepare effectively for exams?
Using past questions allows students to familiarize themselves with the question patterns and difficulty level. Start by attempting questions under exam conditions, then compare your answers with the provided solutions. Focus on recurring topics and practice calculations and diagrams regularly. This helps strengthen both theoretical understanding and problem-solving speed.
Are the answers in past question compilations always accurate?
While most published past questions include correct answers, occasional errors may occur. It’s important to cross-check answers with your textbook, teacher’s notes, or credible electronics reference books. Understanding the solution method is more important than memorizing answers, as this ensures you can tackle variations of the questions.
How often should I practice past questions to improve my performance?
Consistent practice is key. Students are encouraged to attempt past questions at least two to three times before exams. Start with individual questions to understand concepts, then move on to timed sessions to simulate exam conditions. Reviewing mistakes and understanding the reasoning behind correct answers significantly improves retention and confidence.
Also Read: SS3 Third Term Basic Electronics Past Questions and Answers
