Question: In an AC circuit, if the frequency is increased, what happens to the inductive reactance? (2020)
Options:
It increases
It decreases
It remains constant
It becomes zero
Correct Answer: It increases
Exam Year: 2020
Solution:
Inductive reactance (XL = 2πfL) increases with an increase in frequency.
In an AC circuit, if the frequency is increased, what happens to the inductive r
Practice Questions
Q1
In an AC circuit, if the frequency is increased, what happens to the inductive reactance? (2020)
It increases
It decreases
It remains constant
It becomes zero
Questions & Step-by-Step Solutions
In an AC circuit, if the frequency is increased, what happens to the inductive reactance? (2020)
Step 1: Understand what inductive reactance is. It is the opposition that an inductor offers to the flow of alternating current (AC).
Step 2: Know the formula for inductive reactance, which is XL = 2πfL, where XL is inductive reactance, f is frequency, and L is inductance.
Step 3: Identify the relationship between frequency and inductive reactance in the formula. Notice that XL depends on frequency (f).
Step 4: Realize that if the frequency (f) increases, the value of XL will also increase because they are directly related.
Step 5: Conclude that in an AC circuit, increasing the frequency leads to an increase in inductive reactance.
Inductive Reactance – Inductive reactance is the opposition that an inductor presents to alternating current, which increases with frequency.
Frequency and Reactance Relationship – The relationship between frequency and inductive reactance is direct; as frequency increases, inductive reactance increases.
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