AC and DC Circuit Concepts

The video tutorial explains inductive reactance, using an example with an inductor in a circuit. It covers two scenarios: one with a direct current (DC) source and another with an alternating current (AC) source. In Part A, the current is calculated using Ohm's law, as no inductive reactance is present with DC. In Part B, the root mean square current is determined by considering inductive reactance, which arises due to the changing current in an AC circuit.

What is the inductance of the inductor used in the example?

• 750 milli henries

• 1 Henry

• 250 milli henries

• 500 milli henries

What is the resistance of the inductor in the given problem?

• 1.5 ohms

• 2.5 ohms

• 3.5 ohms

• 4.5 ohms

What type of current does a battery produce?

• Static current

• Pulsating current

• Direct current

• Alternating current

Why is there no inductive reactance in the DC circuit?

• Because the resistance is zero

• Because the voltage is too high

• Because the current is constant

• Because the current is alternating

What is the current in the inductor when connected to a DC source?

• 11.6 amps

• 7.6 amps

• 9.6 amps

• 5.6 amps

What type of voltage source is used in Part B of the problem?

• Pulsating voltage source

• Static voltage source

• AC voltage source

• DC voltage source

What is the root mean square voltage in the AC circuit?

• 12 volts

• 24 volts

• 36 volts

• 48 volts

What is the frequency of oscillation in the AC circuit?

• 60 Hertz

• 50 Hertz

• 40 Hertz

• 30 Hertz

What is the formula for inductive reactance?

• Current divided by voltage

• Angular frequency multiplied by inductance

• Resistance divided by frequency

• Voltage multiplied by current

What is the root mean square current in the AC circuit?

• 0.25 amps

• 0.10 amps

• 0.15 amps

• 0.20 amps