SS1 First Term Basic Electronics Past Questions And Answers
Here are 20 basic electronics questions for SS1 First Term, along with options and answers:
Question: What is the SI unit of resistance?
A) Ohm
B) Volt
C) Ampere
D) Watt
Answer: A) Ohm
Question: Which component is used to store electrical charge in a circuit?
A) Resistor
B) Capacitor
C) Inductor
D) Diode
Answer: B) Capacitor
Question: What does LED stand for?
A) Light Emitting Diode
B) Long Electric Device
C) Low Energy Detector
D) Liquid Emission Display
Answer: A) Light Emitting Diode
Question: In a series circuit, the total resistance is equal to:
A) The sum of individual resistances
B) The average of individual resistances
C) The reciprocal of individual resistances
D) The product of individual resistances
Answer: A) The sum of individual resistances
Question: What is the purpose of a diode in an electronic circuit?
A) To amplify signals
B) To regulate voltage
C) To control current flow
D) To store charge
Answer: C) To control current flow
Question: Which material is commonly used as a semiconductor in electronics?
A) Copper
B) Aluminum
C) Silicon
D) Iron
Answer: C) Silicon
Question: What is the function of an inductor in a circuit?
A) Stores electrical charge
B) Controls current flow
C) Induces voltage
D) Regulates resistance
Answer: C) Induces voltage
Question: The basic unit of electrical power is:
A) Watt
B) Volt
C) Ampere
D) Ohm
Answer: A) Watt
Question: Which type of circuit has only one path for current to flow?
A) Parallel circuit
B) Series circuit
C) Combination circuit
D) Open circuit
Answer: B) Series circuit
Question: What is the function of a transistor in electronic devices?
A) To amplify or switch electronic signals
B) To store electrical energy
C) To regulate voltage
D) To resist current flow
Answer: A) To amplify or switch electronic signals
Question: The symbol “AC” in AC voltage stands for:
A) Alternating Current
B) Amplified Current
C) Average Current
D) Applied Current
Answer: A) Alternating Current
Question: Which component is used to protect other components from excessive current?
A) Resistor
B) Capacitor
C) Diode
D) Fuse
Answer: D) Fuse
Question: What is the role of a resistor in an electrical circuit?
A) Stores energy
B) Controls current flow
C) Induces voltage
D) Amplifies signals
Answer: B) Controls current flow
Question: Which law states that the current flowing through a conductor is directly proportional to the voltage across it?
A) Ohm’s Law
B) Kirchhoff’s Law
C) Faraday’s Law
D) Newton’s Law
Answer: A) Ohm’s Law
Question: What is the purpose of a transformer in an electrical circuit?
A) To amplify signals
B) To convert AC to DC
C) To regulate voltage
D) To change voltage levels
Answer: D) To change voltage levels
Question: The unit of capacitance is:
A) Ohm
B) Ampere
C) Farad
D) Volt
Answer: C) Farad
Question: Which device is used to protect electronic circuits from voltage spikes?
A) Capacitor
B) Inductor
C) Diode
D) Surge Protector
Answer: D) Surge Protector
Question: What does IC stand for in electronics?
A) Integrated Circuit
B) Inductive Capacitor
C) Insulated Conductor
D) Indirect Current
Answer: A) Integrated Circuit
Question: The unit of frequency is:
A) Hertz
B) Watt
C) Joule
D) Volt
Answer: A) Hertz
Question: Which law states that the total current entering a junction is equal to the total current leaving the junction?
A) Ohm’s Law
B) Kirchhoff’s Current Law
C) Kirchhoff’s Voltage Law
D) Faraday’s Law
Answer: B) Kirchhoff’s Current Law.
