Nickel shows ferromagnetic property at room temperature. If the temperature is
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show Options…
7 years ago
Magnetic Effects of Current and Magnetism
Two particles A and B having equal charges, after being accelerated
Two particles A and B having equal charges, after being accelerated through the same potential difference enter into a region…
7 years ago
If the magnetising field on a ferromagnetic material is increased, its permeability
If the magnetising field on a ferromagnetic material is increased, its permeability Options (a) decrease (b) increase (c) is unaffected…
7 years ago
The dimensions of magnetic field intensity B are
The dimensions of magnetic field intensity B are Options (a) MLT⁻²A⁻¹ (b) MT⁻²A⁻¹ (c) ML²TA⁻² (d) M²LT⁻²A⁻¹ Correct Answer: MT⁻²A⁻¹…
7 years ago
Core of electromagnets are made of ferromagnetic material which has
Core of electromagnets are made of ferromagnetic material which has Options (a) low permeability and high retentivity (b) high permeability…
7 years ago
Equal currents are passing through two very long and straight parallel wires
Equal currents are passing through two very long and straight parallel wires in the same direction. They will Options (a)…
7 years ago
Identify the paramagnetic substance
Identify the paramagnetic substance Options (a) Iron (b) Aluminium (c) Nickel (d) Hydrogen Correct Answer: AluminiumExplanation:No explanation available. Be the…
7 years ago
A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal component of earth's…
7 years ago
At place on earth, the vertical component of earth’s magnetic field is √3 times
At place on earth, the vertical component of earth's magnetic field is √3 times its horizontal component. The angle of…
7 years ago
The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
The effective length of magnet is 31.4 cm and its pole strength is 0.8Am. The magnetic moment, if it is…
7 years ago