Which of the following statement(s) is/are incorrect?
(A) A current carrying loop may act as a magnetic dipole whose magnetic moment may depend on its area and the number of turns.
(B) A linear solenoid carrying current, may act as a bar magnet.
(C) The magnetic lines of forces due to the current carrying solenoid makes closed curves like in a bar magnet.
(D) The magnetic field inside a solenoid is perpendicular to its axis.
Choose the correct answer from the given options:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (D) only
(A) Correct — Magnetic moment of a loop is $M = nIA$, depends on area and number of turns.
(B) Correct — A long solenoid produces a field similar to a bar magnet.
(C) Correct — Magnetic field lines of a solenoid are closed, just like a bar magnet.
(D) Incorrect — Magnetic field inside a solenoid is parallel to its axis, not perpendicular.
Final Answer: (D)