About this Study Set
This study set covers Electrical Engineering through
18 practice questions.
A collection of knowledge-based questions covering basic circuit theory, components, and electromagnetic principles. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Foundations of Electrical Engineering study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which unit is defined as one joule of energy per coulomb of charge?
-
A
Ampere
-
B
Volt
-
C
Ohm
-
D
Watt
2
According to Ohm's Law, what happens to the current in a circuit if the resistance is doubled while the voltage remains constant?
-
A
It doubles
-
B
It remains the same
-
C
It is halved
-
D
It quadruples
3
What is the primary function of a capacitor in an electrical circuit?
-
A
To resist current flow
-
B
To store energy in an electric field
-
C
To convert AC to DC
-
D
To increase voltage levels
4
In a series circuit consisting of three resistors with values 2Ω, 3Ω, and 5Ω, what is the total resistance?
-
A
1.0Ω
-
B
10Ω
-
C
30Ω
-
D
0.1Ω
5
Which component is used to limit or regulate the flow of electrical current in an electronic circuit?
-
A
Transistor
-
B
Diode
-
C
Resistor
-
D
Capacitor
6
What does a diode allow to happen in an electrical circuit?
-
A
Store energy
-
B
Amplify a signal
-
C
Allow current to flow in one direction
-
D
Increase the voltage
7
Which device is used to transform electrical energy from one voltage level to another using electromagnetic induction?
-
A
Generator
-
B
Transformer
-
C
Rectifier
-
D
Inverter
8
What is the SI unit for electrical capacitance?
-
A
Henry
-
B
Farad
-
C
Coulomb
-
D
Weber
9
In a parallel circuit, which of the following quantities remains constant across all branches?
-
A
Current
-
B
Voltage
-
C
Power
-
D
Resistance
10
Which material is commonly used as a semiconductor in the manufacturing of transistors?
-
A
Copper
-
B
Silicon
-
C
Aluminum
-
D
Rubber
11
What happens to the magnetic field strength of an electromagnet if the number of turns in the coil is increased?
-
A
It decreases
-
B
It stays the same
-
C
It increases
-
D
It reverses polarity
12
What is the standard frequency of alternating current (AC) in most Australian residential power grids?
-
A
50 Hz
-
B
60 Hz
-
C
100 Hz
-
D
120 Hz
13
Which law states that the sum of currents entering a junction must equal the sum of currents leaving it?
-
A
Ohm's Law
-
B
Kirchhoff's Current Law
-
C
Faraday's Law
-
D
Lenz's Law
14
What is the relationship between power (P), voltage (V), and current (I)?
-
A
P = V / I
-
B
P = I / V
-
C
P = V * I
-
D
P = V^2 * I
15
What unit is used to measure electrical inductance?
-
A
Tesla
-
B
Henry
-
C
Siemens
-
D
Joule
16
Which electrical safety device is designed to break a circuit when current exceeds a safe limit?
-
A
Transformer
-
B
Fuse
-
C
Capacitor
-
D
Transistor
17
What is the primary purpose of an inverter in an electrical system?
-
A
Convert DC to AC
-
B
Step down AC voltage
-
C
Store DC charge
-
D
Increase resistance
18
What material property determines how easily electrons can flow through a substance?
-
A
Inductance
-
B
Conductivity
-
C
Capacitance
-
D
Reluctance
