Question

Statement I : We cannot think of magnetic field configuration with three poles.
Statement II : A bar magnet does exert a torque on itself due to its own field.

• A. If both statements are true and statement II is the correct explanation of statement I
• B. If both statements are true but statement II is not the correct explanation of statement I
• C. If statement I is true but statement II is false
• D. If both statements are false

Answer 1

Answer: (D)

It is quite clear that magnetic poles always exist in pairs. Since one can imagine magnetic field configuration with three poles when north poles or south poles of two magnets are glued together. They provide a three-pole field configuration. It is also known that a bar magnet does not exert a torque on itself due to own its field.