Question

Assertion (A): When a current flows through a metallic straight conductor, a magnetic field is set up at right angles to the direction of flow of current.

Reason (R): The flowing electrons act like tiny magnets.

Options

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

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

• Assertion (A) is false, but Reason (R) is true.

• Assertion (A) is true, but Reason (R) is false.

Answer 1

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

Explanation:

A current in a straight conductor is produced by flowing electrons. These moving electrons act like tiny magnets and produce a magnetic field around the conductor. The magnetic field lines are concentric circles, so the field is at right angles to the direction of the current. Hence, Reason correctly explains Assertion.