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Assertion If a magnet is brought closer ...

Assertion If a magnet is brought closer to a current carrying loop along its axis, then current always decreases in the loop.
Reason Magnet is repelled by the loop.

A

If both Assertion and Reason are corrent and Reason is the corrent explanation of Assertion.

B

If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.

C

If Assertion is true but Reason is false.

D

If Assertion is false but Reason is ture.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understanding the Assertion The assertion states that if a magnet is brought closer to a current-carrying loop along its axis, then the current always decreases in the loop. - **Explanation**: According to Faraday's law of electromagnetic induction, a change in magnetic flux through a loop induces an electromotive force (EMF) in the loop. If a magnet is brought closer to the loop, the magnetic flux through the loop increases. According to Lenz's Law, the induced current will flow in such a direction as to oppose the change in magnetic flux. If the magnet is moving closer, the loop will generate a current in the opposite direction to oppose the increase in flux, which can lead to a decrease in the original current in the loop. ### Step 2: Understanding the Reason The reason states that the magnet is repelled by the loop. - **Explanation**: The reason is related to Lenz's Law, which states that the induced current will create a magnetic field that opposes the change in magnetic flux. When the magnet approaches the loop, the loop generates a magnetic field that opposes the magnet's field, leading to a repulsion effect. However, this does not directly explain why the current decreases; it merely describes the interaction between the magnet and the loop. ### Step 3: Conclusion - Both the assertion and the reason are correct statements. - However, the reason provided does not correctly explain the assertion. The assertion is about the decrease in current due to the induced EMF opposing the change in flux, while the reason discusses the repulsion without addressing the current's behavior directly. ### Final Answer Both assertion and reason are correct, but the reason is not the correct explanation for the assertion. Therefore, the correct option is: **Both assertion and reason are correct, but reason is not the correct explanation for assertion.** ---
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understanding the Assertion The assertion states that if a magnet is brought closer to a current-carrying loop along its axis, then the current always decreases in the loop. - **Explanation**: According to Faraday's law of electromagnetic induction, a change in magnetic flux through a loop induces an electromotive force (EMF) in the loop. If a magnet is brought closer to the loop, the magnetic flux through the loop increases. According to Lenz's Law, the induced current will flow in such a direction as to oppose the change in magnetic flux. If the magnet is moving closer, the loop will generate a current in the opposite direction to oppose the increase in flux, which can lead to a decrease in the original current in the loop. ### Step 2: Understanding the Reason ...
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