The magnetic susceptibility does not depend upon the temperature in
Options
(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 […]
An electron is moving in a circular path under the influence of a transverse magnetic field of 3.57×10⁻² T. If the value of e/m is 1.76×10¹¹ C/kg, the frequency of revolution of the electron is […]
Before using the tangent galvanometer, its coil is set in
Options
(a) Magnetic meridian (b) Perpendicular to magnetic meridian (c) At angle of 45⁰ to magnetic meridian (d) It does not require any […]
Tangent galvanometer is used to measure
Options
(a) Current (b) Resistance (c) Charge (d) Potential difference
Correct Answer:
Current
Explanation:
No explanation available. Be the first to write the explanation for this question […]
If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio of their resistances will be
Options
(a) (3:2) (b) (2:3) (c) (3:4) (d) (4:3)
Correct Answer:
(3:2)
A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction 1/π (Wb / m²) in such a way that its axis makes an angle of 60⁰ with B⃗. The […]
A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will […]
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