Fundamentals of Electrical Systems and Components Quiz

Test your understanding of electronics with this quiz on electrical resistance, components, laws, and functions in circuits. How many can you get right?

#1

What is the unit of electrical resistance?

Volt
Ohm
Ampere
Watt
#2

Which component is used to store electrical charge?

Resistor
Inductor
Capacitor
Diode
#3

What is the SI unit of electric charge?

Coulomb
Ohm
Volt
Watt
#4

Which type of circuit allows only one path for current flow?

Series circuit
Parallel circuit
Combination circuit
Complex circuit
#5

What is the unit of electric current?

Coulomb
Ohm
Ampere
Watt
#6

Which component is commonly used to control the flow of current in a circuit?

Resistor
Capacitor
Transistor
Inductor
#7

What does AC stand for in electrical systems?

Alternating Current
Amplified Current
Analog Current
Automated Current
#8

Which law states that the voltage across a conductor is directly proportional to the current passing through it?

Ohm's Law
Kirchhoff's Law
Faraday's Law
Lenz's Law
#9

What is the function of a transformer in an electrical system?

To regulate voltage
To convert AC to DC
To store energy
To amplify current
#10

Which material is commonly used as an insulator in electrical systems?

Copper
Aluminum
Rubber
Silver
#11

What is the purpose of a fuse in an electrical circuit?

To regulate voltage
To amplify current
To prevent overcurrent
To store energy
#12

Which law states that the total current entering a junction equals the total current leaving the junction in a circuit?

Ohm's Law
Kirchhoff's Voltage Law
Kirchhoff's Current Law
Faraday's Law
#13

What is the purpose of a diode in an electrical circuit?

To regulate voltage
To amplify current
To store charge
To allow current flow in one direction only
#14

What does LED stand for in electronics?

Light Emitting Diode
Low Energy Demand
Lithium Electric Device
Longitudinal Energy Diode
#15

What is the function of a relay in an electrical system?

To convert AC to DC
To amplify current
To control a high-power circuit with a low-power signal
To regulate voltage
#16

What is the purpose of an inverter in an electrical system?

To store energy
To convert DC to AC
To regulate voltage
To amplify current
#17

What is the purpose of a potentiometer in an electrical circuit?

To measure resistance
To regulate voltage
To amplify current
To provide variable resistance

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