In an AC circuit, the current lags behind the voltage by 90 degrees in which com

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Question: In an AC circuit, the current lags behind the voltage by 90 degrees in which component? (2020)

Options:

Correct Answer: Inductor

Exam Year: 2020

Solution:

In an inductor, the current lags behind the voltage by 90 degrees.

In an AC circuit, the current lags behind the voltage by 90 degrees in which component? (2020)

In an AC circuit, the current lags behind the voltage by 90 degrees in which component? (2020)

Step 1: Understand what AC circuit means. AC stands for Alternating Current, where the current and voltage change direction periodically.
Step 2: Learn about components in an AC circuit. Common components include resistors, capacitors, and inductors.
Step 3: Know the behavior of these components in an AC circuit. Resistors have current and voltage in phase, capacitors have current leading voltage, and inductors have current lagging behind voltage.
Step 4: Focus on inductors. In an inductor, the current does not change direction immediately when the voltage changes. Instead, it takes time to build up, causing it to lag.
Step 5: Remember the specific lag angle. In an inductor, the current lags behind the voltage by 90 degrees.

Inductive Reactance – In an AC circuit, inductors cause the current to lag behind the voltage due to the energy storage in the magnetic field.