Question 201 markMCQSection A

$Assertion (A) : The deflection of a compass needle placed near a current carrying wire decreases when the magnitude of an electric current in the wire is increased. Reason (R) : Strength of the magnetic field at a point due to a current carrying conductor increases on increasing the current in the conductor.$

Magnetic Effects of Electric Current

Magnetic Field due to a Current through a Straight Conductor

Options

(A)

Both (A) and (R) are true and (R) is the correct explanation of (A).

(B)

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(C)

(A) is true, but (R) is false.

(D)

(A) is false, but (R) is true.

The assertion is false, but the reason is true.

deflection

compass needle

current

magnetic field

Hint

$The deflection of the compass needle increases with the increase in current.$

Quick oral answer

$The assertion is false, but the reason is true.$

1. $thinking that the deflection of the compass needle decreases with the increase in current$

The deflection of a compass needle placed near a current-carrying wire increases when the magnitude of the electric current in the wire is increased. This is because the strength of the magnetic field at a point due to a current-carrying conductor increases on increasing the current in the conductor.

$The strength of the magnetic field produced by a current-carrying conductor can be increased by increasing the current in the conductor.$

Q20 of 39 questions

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$This question carries 1 mark in the CBSE Class 10 Science 2024 examination.$

$This question is from the chapter "Magnetic Effects of Electric Current" in the CBSE Class 10 Science syllabus.$

$This question covers the topic "Magnetic Field due to a Current through a Straight Conductor" from CBSE Class 10 Science.$

$This is a MCQ question from Section A in the CBSE Class 10 Science 2024 paper.$