In an AC circuit, the current lags the voltage by 90 degrees in which type of ci

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

Options:

Correct Answer: Inductive

Exam Year: 2020

Solution:

In an inductive circuit, the current lags the voltage by 90 degrees.

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

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

Step 1: Understand what AC circuit means. AC stands for Alternating Current, which means the current changes direction periodically.
Step 2: Learn about the relationship between current and voltage in AC circuits. Sometimes, current and voltage do not change at the same time.
Step 3: Identify the types of circuits. There are mainly three types: resistive, capacitive, and inductive.
Step 4: Focus on inductive circuits. In these circuits, components like inductors store energy in a magnetic field.
Step 5: Know that in an inductive circuit, the current does not reach its peak at the same time as the voltage. Instead, the current reaches its peak later.
Step 6: Understand the term 'lags.' When we say the current lags the voltage by 90 degrees, it means the current reaches its peak a quarter cycle (90 degrees) after the voltage does.
Step 7: Conclude that in an inductive circuit, the current lags the voltage by 90 degrees.

Inductive Circuits – In inductive circuits, the current lags the voltage due to the properties of inductors, which resist changes in current.