The correct answer is: (A) Slightly less. When a diamagnetic material is placed in a magnetic field, it creates a weak magnetic field in the opposite direction. This opposes the external field, making the net magnetic field inside the material ...
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The correct answer is: (D) Copper. Copper is a diamagnetic material, meaning it is weakly repelled by a magnetic field. Unlike ferromagnetic materials like iron, cobalt and steel, diamagnetic substances do not retain magnetism and exhibit only a very weak, ...
The correct statement is: (D) Tangent at a point on every field line gives the direction of magnetic field at that point. Magnetic field lines are continuous closed loops and never intersect each other. They represent both the direction and ...
Horizontal component BH = B cosδ. Given: BH 0.2G, B = 0.4G So, cosδ = 0.2/0.4 = 0.5 δ = cos⁻¹ (0.5) = 60°. Answer: (C) 60°.
In ferromagnetic materials, as the magnetizing field increases, permeability initially increases, reaches a maximum and then decreases due to magnetic saturation. So, permeability does not keep increasing. Correct answer: (A) decreases.