Two poles of same strength attract each other with a force of magnitude F
Two poles of same strength attract each other with a force of magnitude F when placed at the two corners…
7 years ago
Magnetic Effects of Current and Magnetism
A thermoelectric refrigerator works on
A thermoelectric refrigerator works on Options (a) Joule effect (b) Seebeck effect (c) Peltier effect (d) Thermionic emission Correct Answer:…
7 years ago
A solenoid has length 0.4 cm, radius 1 cm and 400 turns of wire. If a current
A solenoid has length 0.4 cm, radius 1 cm and 400 turns of wire. If a current of 5 A…
7 years ago
The magnetic moment of a diamagnetic atom is
The magnetic moment of a diamagnetic atom is Options (a) equal to zero (b) much greater than one (c) 1…
7 years ago
The magnetic susceptibility of a material of a rod is 299. Permeability of vacuum
The magnetic susceptibility of a material of a rod is 299. Permeability of vacuum μ₀ is 4πx10⁻⁷ Hm⁻¹. Absolute permeability…
7 years ago
The conducting loop in the form of a circle is placed in a uniform magneitc field
The conducting loop in the form of a circle is placed in a uniform magneitc field with its plane perpendicular…
7 years ago
Two concentric coils each of radius equal to 2π cm are placed at right angles
Two concentric coils each of radius equal to 2π cm are placed at right angles to each other. If 3A…
7 years ago
The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length
The intensity of magnetisation of a bar magnet is 5x10⁴ Am⁻¹. The magnetic length and the area if cross- section…
7 years ago
Two parallel beams of positron moving in the same direction will
Two parallel beams of positron moving in the same direction will Options (a) not interact with each other (b) repel…
7 years ago
A vibration magnetometer placed in magnetic meridian has a small bar magnet
A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period…
7 years ago