If r be the distance of a point on the axis of a magnetic dipole from its centre
If r be the distance of a point on the axis of a magnetic dipole from its centre then the…
7 years ago
Magnetic Effects of Current and Magnetism
The magnetic susceptibility does not depend upon the temperature in
The magnetic susceptibility does not depend upon the temperature in Options (a) Ferrite substances (b) Ferromagnetic substances (c) Diamagnetic substances…
7 years ago
For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C. What will be the neutral…
7 years ago
The magnetic field at the centre of a circular coil carrying current I ampere is B.
The magnetic field at the centre of a circular coil carrying current I ampere is B. If the coil is…
7 years ago
A proton is projected with a speed of 3×10⁶ m/s horizontally from east to west.
A proton is projected with a speed of 3x10⁶ m/s horizontally from east to west. An uniform magnetic field of…
7 years ago
An electron is moving in a circular path under the influence of a transverse magnetic
An electron is moving in a circular path under the influence of a transverse magnetic field of 3.57x10⁻² T. If…
7 years ago
Before using the tangent galvanometer, its coil is set in
Before using the tangent galvanometer, its coil is set in Options (a) Magnetic meridian (b) Perpendicular to magnetic meridian (c)…
7 years ago
Tangent galvanometer is used to measure
Tangent galvanometer is used to measure Options (a) Current (b) Resistance (c) Charge (d) Potential difference Correct Answer: CurrentExplanation:No explanation…
7 years ago
If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio of their resistances…
7 years ago
A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction
A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction 1/π (Wb / m²)…
7 years ago