Free Printable Basic Electronics Quiz

1.

It is a fundamental principle in electronics and electrical engineering that explains the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit.

a)

A. Electron Theory

b)

B. Law of Inertia

c)

C. Ohms Law

d)

D. Law of Motion

2.

What happens to the current if the resistance increases, while the voltage stays the same?

a)

A. Current increases

b)

B. Current stays the same

c)

C. Current decreases

d)

D. Current becomes zero

3.

What happens to the current if the resistance increases, while the voltage stays the same?

a)

A. Current increases

b)

B. Current stays the same

c)

C. Current decreases

d)

D. Current becomes zero

4.

What happens to the current if the voltage increases, while the resistance stays the same?

a)

Current increases

b)

Current decreases

c)

Current stays the same

d)

Current becomes zero

5.

Who is the French physicist who undertook lots of experiments involved in varying the amount of electrical current called the intensite du courant or the intensity of current?

a)

A. Georg Simon Ohm

b)

B.André-Marie Ampère

c)

C. Joseph John Thomson

d)

D. William Walker Atkinson

6.

If a light bulb has a resistance of 30 Ω and is connected to a 120 V supply, the current flowing through it is:

a)

A. 7200 A

b)

B. 0.5 A

c)

C. 2 A

d)

D. 4 A

7.

If a circuit has a 12 V supply and a current of 0.5 A, what is the resistance?

a)

A. 0.1 Ω

b)

B. 24 Ω

c)

C. 6 Ω

d)

D. 40 Ω

8.

Which of the following is an example of an electronic component?

a)

Gear

b)

Resistor

c)

Pulley

d)

Bearing

9.

Which unit is used to measure electric Voltage

a)

Volt (V)

b)

Ampere (A)

c)

Ohm (Ω)

d)

Watt (W)

10.

Which of the following devices converts electrical energy into heat?

a)

Heater

b)

Motor

c)

Transformer

d)

Battery

11.

In electronics, a diode is mainly used to:

a)

Store energy

b)

Allow current to flow in one direction only

c)

Increase voltage

d)

Measure resistance

12.

When working with high voltage circuits, the safest action before starting work is to:

a)

Wear rubber-soled shoes and continue working while power is on

b)

Disconnect power and verify with a meter before touching components

c)

Use only one hand to touch wires while power is on

d)

Stand on a wooden stool and work quickly

13.

What is the flow of electrons or the flow of free electrons?

a)

Electrons

b)

Resistors

c)

Current

d)

Diode

14.

In case of electric shock, the first step is to:

a)

Pull the victim away with your bare hands

b)

Turn off the power source before approaching

c)

Pour water on the victim to revive them

d)

Shake the victim to wake them up

15.

When handling hazardous chemicals in electronics work, you should:

a)

Avoid reading labels and rely on experience

b)

Work in a well-ventilated area and wear protective gear

c)

Store them near heat sources to prevent freezing

d)

Mix them to save storage space

16.

To prevent Electrostatic Discharge (ESD) damage when handling sensitive components, you should:

a)

Keep components in plastic bags without shielding

b)

Ground yourself using an anti-static wrist strap

c)

Rub your hands on clothing before touching components

d)

Work on a carpeted floor for comfort

17.

What type of switch that allows current to flow only when the button is pressed?

a)

Single pole, Single Throw

b)

Push Switch

c)

Push to Break

d)

Single Pole Double Throw

18.

What does the abbreviation "LED" stand for?

a)

Light Emitting Diode

b)

Low Energy Device

c)

Light Energy Distributor

d)

Linear Electric Device

19.

The term "AC" in electronics refers to:

a)

Active Current

b)

Alternating Current

c)

Absolute Current

d)

Automatic Control

20.

In electronics, "PCB" stands for:

a)

Printed Circuit Board

b)

Power Control Box

c)

Primary Circuit Breaker

d)

Pulse Control Board

21.

What does "IC" stand for?

a)

Internal Circuit

b)

Integrated Circuit

c)

Input Control

d)

Induction Coil

22.

Which of the following is a renewable source of electrical energy?

a)

Coal

b)

Natural Gas

c)

Solar Energy

d)

Nuclear Energy

23.

What is the primary source of energy in a hydroelectric power plant?

a)

Wind

b)

Moving water

c)

Sunlight

d)

Heat from the Earth

24.

Geothermal energy comes from:

a)

The sun's heat

b)

The Earth's internal heat

c)

Wind currents

d)

Burning fossil fuels

25.

Which of the following is a disadvantage of using fossil fuels for energy?

a)

They are renewable

b)

They cause air pollution

c)

They are always available

d)

They produce no waste

26.

It is the branch of science and technology that deals with the study, design, and use of electrical circuits, devices, and systems that control the flow of electrons or other charge carriers.?

a)

Biology

b)

Electronics

c)

Physics

d)

Chemistry

27.

If the voltage is 12V and the resistance is 4Ω, what is the current?

a)

3A

b)

8A

c)

48A

d)

16A

28.

In Ohm's Law, the unit of current is:

a)

Volts

b)

Ohms

c)

Amperes

d)

Watts

29.

If the current is 2A and the resistance is 10Ω, what is the voltage?

a)

5V

b)

20V

c)

12V

d)

8V

30.

What happens to the current if the resistance increases and voltage remains the same?

a)

Current increases

b)

Current stays the same

c)

Current decreases

d)

Current becomes zero

31.

In a series circuit, how are the components connected?

a)

In branches

b)

One after another

c)

In opposite directions

d)

In a loop

32.

In a parallel circuit, what happens if one component fails?

a)

All components stop working

b)

The voltage increases

c)

The other components continue to work

d)

The circuit short-circuits

33.

Which type of circuit is commonly used in household wiring?

a)

Series circuit

b)

Parallel circuit

c)

Short circuit

d)

Closed circuit

34.

In a series circuit, if more bulbs are added, the brightness of each bulb will:

a)

Increase

b)

Stay the same

c)

Decrease

d)

Explode

35.

What is a main advantage of a parallel circuit over a series circuit?

a)

It is cheaper to build

b)

Each component gets full voltage

c)

It uses more wires

d)

Components must share current

36.

These are consumable items used during electrical installation or maintenance. They are often used up or replaced over time.

a)

Electrical Supplies

b)

Electrical Materials

c)

Electrical Tools

d)

Electrical Equipment

37.

These are the parts or components installed to make an electrical system work. They become part of the permanent system.

a)

Electrical Supplies

b)

Electrical Materials

c)

Electrical Tools

d)

Electrical Equipment

38.

These are the instruments or devices used to perform electrical work (e.g., installation, repair, or testing). They are not part of the circuit and are reusable.

a)

Electrical Supplies

b)

Electrical Materials

c)

Electrical Tools

d)

Electrical Equipment

39.

What type of diagram that uses standardized symbols to represent electrical components and their connections?

a)

Schematic

b)

Pictorial

c)

Block

d)

Wiring

40.

What type of diagram that shows components as they actually appear, making it easy for beginners to identify and understand the physical layout of a circuit?

a)

Schematic

b)

Pictorial

c)

Block

d)

Wiring

41.

Identify the pointer reading and copute for the resistance with the range multiplier of X10.

a)

44 Ω

b)

440 Ω

c)

4400 Ω

d)

44,000 Ω

42.

Which of the following that shows a pictorial diagram of two incandescent lamp connected in parallel circuit controlled by a single pole switch and powered by a battery?

a)

b)

c)

d)

43.

Which of the following that shows a schematic diagram of one incandescent lamp and one flourescent lamp connected in series circuit controlled by a single pole switch and powered by a battery?

a)

b)

c)

d)

44.

They are described as on off on switch.

a)

Single pole, double throw

b)

Single pole, single throw

c)

Double pole, double throw

d)

Push to break

45.

What is this symbol stands for?

a)

Battery

b)

Diode

c)

Capacitor

d)

Resistor

46.

What is this symbol represents?

a)

A. Capacitor

b)

B. Diode

c)

C. Battery

d)

D. Transformer

47.

It is a closed path where electrons flow in a wire.

a)

A. Current

b)

B. Resistors

c)

C. Circuit

d)

D. Diode

48.

What is this symbol represent?

a)

Diode

b)

Thyresistor

c)

Ground

d)

LED

49.

Which symbol represents a ground connection?

a)

b)

c)

d)

50.

What is this symbol represent?

a)

Double throw, double throw switch

b)

Double pole, single throw switch

c)

Single pole, double throw switch

d)

Single pole switch

Basic Electronics Quiz

Total questions: 50

Worksheet time: 25mins

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