WorksheetsUnderstanding Electrical Circuits Quiz
Total questions: 18
Worksheet time: 9mins
Which of the following is a method used for circuit analysis?
Fourier Transform
Mesh Analysis
Laplace Transform
Fast Fourier Transform
Ohm's Law is represented by which of the following equations?
V=IR
P=IV
E=mc2
F=ma
In a DC circuit, what is the primary characteristic of the current?
It changes direction periodically
It remains constant in direction
It has a frequency of 50 Hz
It is always zero
What is the unit of electrical resistance?
Ampere
Volt
Ohm
Watt
Which of the following is true for an AC circuit?
The current flows in one direction only
The voltage remains constant
The current changes direction periodically
The resistance is always zero
In a series circuit, the total resistance is:
The sum of the individual resistances
The reciprocal of the sum of the reciprocals of the individual resistances
Always zero
Equal to the largest resistance
What is the power dissipated in a resistor with a current of 2 A and a resistance of 5 Ω ?
10 W
20 W
5 W
40 W
Which of the following is a characteristic of a parallel circuit?
The total resistance is the sum of the individual resistances
The voltage across each component is the same
The current through each component is the same
The power is always zero
What is the frequency of the standard AC supply in Great Britain?
60 Hz
50 Hz
100 Hz
25 Hz
If a circuit has a voltage of 12 V and a resistance of 4 Ω , what is the current flowing through the circuit?
3 A
48 A
0.33 A
8 A
Which component is used to store electrical energy in a circuit?
Resistor
Capacitor
Inductor
Diode
In a purely resistive AC circuit, the phase difference between voltage and current is:
0 degrees
90 degrees
180 degrees
45 degrees
What is the equivalent resistance of two 10 Ω resistors connected in parallel?
20 Ω
5 Ω
10 Ω
0 Ω
Which of the following is NOT a circuit analysis technique?
Nodal Analysis
Thevenin's Theorem
Superposition Theorem
Quantum Analysis
What is the main advantage of using AC over DC for power transmission?
AC is easier to generate
AC can be easily transformed to different voltages
AC is safer than DC
AC is more efficient in all applications
What is the phase difference between voltage and current in a purely capacitive AC circuit?
0 degrees
180 degrees
45 degrees
90 degrees
Which component is used to oppose changes in current in a circuit?
Resistor
Capacitor
Inductor
Diode
What is the main disadvantage of using DC for long-distance power transmission?
DC cannot be easily transformed to different voltages
DC is less efficient in all applications
DC is more expensive to generate
DC is more dangerous than AC
