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WorksheetsUnit 1
Total questions: 8
Worksheet time: 8mins
Which of the following is the correct expression for Ohm’s Law?
V=I+R
I=V/R
V=IR
R=V−I
Which component in a circuit opposes the flow of current and converts electrical energy into heat?
Resistor
Capacitor
Inductor
Conductor
In Kirchhoff's Current Law (KCL), the sum of currents at any node is:
Zero
Equal to the voltage
Equal to the resistance
Equal to the power
What does the inductance of an inductor depend on?
The length of the wire
The number of coils
The type of material used
All of the above
The RMS value of a sinusoidal AC current is equal to:
The average current value
The peak current value divided by √2
The average of the square of the instantaneous current
The peak current value multiplied by √2
What is the main difference between active power (P) and apparent power (S) in an AC circuit?
Active power is the total power supplied, while apparent power is the power consumed.
Active power is the real power consumed, while apparent power is the total power supplied.
Active power is consumed by inductive elements, while apparent power is consumed by resistive elements.
Active power is never equal to apparent power.
In a purely resistive AC circuit, the phase difference between voltage and current is:
90°
180°
0°
45°
Which of the following is true for the average value of a sinusoidal AC voltage?
The average value is equal to the peak value.
The average value over a full cycle is zero.
The average value is always positive.
The average value is twice the RMS value.
