Question

Identify the correct statement:

• A. The direction of magnetic field due to a current element is given by Fleming's Left Hand Rule.
• B. The magnetic field inside a solenoid is non-uniform.
• C. A current carrying conductor produces an electric field around it.
• D. A straight current carrying conductor has circular magnetic field lines around it.

Hint:

The magnetic field around a straight current-carrying conductor forms circular lines, and the direction is determined by the right-hand rule.

Answer 1

The Correct Option is D

Let's break down the statements: - (1) The direction of magnetic field due to a current element is given by Fleming's Left Hand Rule: Fleming's Left Hand Rule is used to find the direction of force on a current-carrying conductor in a magnetic field, not for the direction of the magnetic field due to a current element. The correct rule for this is the Right-Hand Rule. - (2) The magnetic field inside a solenoid is non-uniform: This is incorrect. The magnetic field inside an ideal solenoid is uniform and directed along its axis. Outside the solenoid, the magnetic field is non-uniform. - (3) A current carrying conductor produces an electric field around it: This is not true for steady currents. A steady current produces a magnetic field, not an electric field. - (4) A straight current carrying conductor has circular magnetic field lines around it: This is the correct statement. The magnetic field around a current-carrying conductor forms concentric circles centered around the conductor, following the right-hand rule. Thus, the correct answer is (4).