Question

The intensity of a magnetic field is defined as the force experienced by a

• A. standard compass
• B. unit positive charge
• C. unit negative charge
• D. unit north pole

Answer 1

The correct option is D

unit north pole

1. Force feel by a unit north pole situated at a point in a magnetic field around a magnet or a current-carrying conductor or coil is called strength of the magnetic field.
2. $\mathrm{unit}\mathrm{north}\mathrm{pole}=\mathrm{having}\mathrm{pole}\mathrm{strength}\mathrm{of}\mathrm{unity}$.
3. Therefore, the strength of a magnetic field is defined as the force felt by a unit north pole,

Hence, option D is correct.