Inductive Reactance Quiz

What does the blue line represent in the waveform of a pure inductive circuit?

• Resistance in the circuit

• Voltage across the inductor

• Current through the circuit

• Capacitance in the circuit

According to Lenz's law, what does the induced voltage across an inductor try to do?

• Decrease the current

• Increase the current

• Reverse the current direction

• Maintain the current at a constant rate

In a pure inductive circuit, how are the voltage and current waveforms related?

• They are in phase

• They are 180 degrees out of phase

• Voltage leads current by 90 degrees

• Current leads voltage by 90 degrees

What is the purpose of a phasor diagram in an inductive circuit?

• To represent the phase difference between voltage and current

• To measure the frequency

• To show the resistance

• To calculate the power

How is the voltage across an inductor related to the current curve?

• It is equal to the current

• It is the integral of the current

• It is the derivative of the current

• It is the square of the current

During which part of the cycle is the voltage across the inductor zero?

• When the current is at its minimum

• When the current is constant

• When the current is changing most rapidly

• When the current is at its maximum

What happens to the inductive reactance as the frequency of the source increases?

• It becomes zero

• It remains constant

• It decreases

• It increases

At high frequencies, how does an inductor behave in a circuit?

• Like a short circuit

• Like an open circuit

• Like a capacitor

• Like a resistor

What is the relationship between inductive reactance and frequency?

• They are inversely proportional

• They are directly proportional

• They are unrelated

• They are equal

What is the unit of inductive reactance?

• Farads

• Volts

• Ohms

• Henrys