Equal currents are passing through two very long and straight parallel wires in the same direction. They will
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(a) attract each other (b) repel each other (c) lean towards each other (d) […]
Identify the paramagnetic substance
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(a) Iron (b) Aluminium (c) Nickel (d) Hydrogen
Correct Answer:
Aluminium
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal component of earth’s magnetic field is Bʜ=3×10⁻⁵ T. What will be the current which gives a deflection of […]
At place on earth, the vertical component of earth’s magnetic field is √3 times its horizontal component. The angle of dip at this place is …….
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(a) 60⁰ (b) 30⁰ (c) 45⁰ (d) […]
The effective length of magnet is 31.4 cm and its pole strength is 0.8Am. The magnetic moment, if it is bent in the form of a semicircle is …….. A-m²
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(a) 1.2 (b) […]
If r be the distance of a point on the axis of a magnetic dipole from its centre then the magnetic field at such a point is proportional to
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(a) 1/r (b) 1/r² […]
The magnetic susceptibility does not depend upon the temperature in
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(a) Ferrite substances (b) Ferromagnetic substances (c) Diamagnetic substances (d) Paramagnetic substances
Correct Answer:
Diamagnetic substances
Explanation:
No explanation available. Be the […]
For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C. What will be the neutral temperature and the temperature of inversion when the temperature of the cold junction is increased […]
The magnetic field at the centre of a circular coil carrying current I ampere is B. If the coil is bent into smaller circular coil of n turns, then its magnetic field at the centre […]
A proton is projected with a speed of 3×10⁶ m/s horizontally from east to west. An uniform magnetic field of strength 2×10⁻³ T exist in the vertically upward direction. What would be the acceleration of […]
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