If the frequency of an AC source is increased, what happens to the inductive rea

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Question: If the frequency of an AC source is increased, what happens to the inductive reactance? (2019)

Options:

Correct Answer: Decreases

Exam Year: 2019

Solution:

Inductive reactance (X_L) is directly proportional to frequency (f). Therefore, if frequency increases, X_L decreases.

If the frequency of an AC source is increased, what happens to the inductive reactance? (2019)

If the frequency of an AC source is increased, what happens to the inductive reactance? (2019)

Step 1: Understand what inductive reactance (X_L) is. It is the opposition that an inductor offers to the flow of alternating current (AC).
Step 2: Know the formula for inductive reactance: X_L = 2 * π * f * L, where f is the frequency and L is the inductance.
Step 3: Observe that in the formula, X_L is directly proportional to frequency (f). This means that if frequency increases, X_L will also increase.
Step 4: Conclude that if the frequency of the AC source is increased, the inductive reactance (X_L) will also increase.

Inductive Reactance – Inductive reactance (X_L) is the opposition that an inductor presents to alternating current, which is directly proportional to the frequency of the AC source.
Frequency Relationship – The relationship between frequency and inductive reactance is given by the formula X_L = 2πfL, indicating that as frequency increases, inductive reactance increases.