Inductive Reactance and Circuit Behavior

The video tutorial explores the limitations of Ohm's and Watt's laws in dealing with inductors. It introduces the concept of inductive reactance, explaining how it opposes current flow in a circuit. The tutorial details the calculation of inductive reactance using frequency and inductance values, and discusses how reactance is added in parallel and series circuits. It also examines the impact of frequency and inductance on reactance, emphasizing the importance of understanding these relationships in circuit design.

What is the main limitation of Ohm's Law as discussed in the video?

• It does not account for inductive reactance.

• It is only applicable to resistors.

• It only applies to DC circuits.

• It cannot be used to calculate power.

What role does the magnetic field play in an inductor?

• It provides a path for current.

• It creates back voltage that opposes current flow.

• It stores electrical energy.

• It generates heat.

How is inductive reactance calculated for a 3 Henry inductor at 60 Hz?

• Using the formula V=IR.

• By adding the inductance and frequency.

• By multiplying resistance by frequency.

• Using the formula 2πFL.

What is the inductive reactance of a 3 Henry inductor at 60 Hz?

• 377 ohms

• 1131 ohms

• 3393 ohms

• 60 ohms

How do you calculate total inductive reactance in a parallel circuit?

• By adding the reactance of each inductor.

• By using the inverse operation or product sum.

• By multiplying the reactance of each inductor.

• By subtracting the smallest reactance from the largest.

What is the total inductive reactance in a series circuit with three 3 Henry inductors?

• 2262 ohms

• 1131 ohms

• 3393 ohms

• 377 ohms

What happens to inductive reactance if the frequency increases?

• It decreases.

• It remains the same.

• It becomes zero.

• It increases.

How does increasing inductance affect inductive reactance?

• It has no effect.

• It increases the reactance.

• It decreases the reactance.

• It makes the reactance zero.

What is the relationship between inductance and inductive reactance?

• Inversely proportional

• Directly proportional

• Exponentially related

• No relationship

Why is it important to understand the impact of frequency on inductive reactance?

• To ensure circuits operate at maximum efficiency.

• To calculate power consumption accurately.

• To predict changes in current flow.

• To design circuits with minimal resistance.