If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
If a steel wire of length l and magnetic moment M is bent into a semicircular arc, then the new…
7 years ago
Physics
If a magnet is suspended at an angle 30⁰ to the magnetic meridian, the dip needle
If a magnet is suspended at an angle 30⁰ to the magnetic meridian, the dip needle makes angle of 45⁰…
7 years ago
Two 220V – 100W bulbs are connected first in series and then in parallel.
Two 220V - 100W bulbs are connected first in series and then in parallel. Each time the combination is connected…
7 years ago
Electromagnets are made of soft iron because soft iron has
Electromagnets are made of soft iron because soft iron has Options (a) Low magnetic susceptibility and low retentivity (b) High…
7 years ago
An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic
An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic moment due to this rotation…
7 years ago
when a magnetic field is applied on a stationary electron, then it
when a magnetic field is applied on a stationary electron, then it Options (a) remains stationary (b) spins about its…
7 years ago
The horizontal component of earth’s magnetic field at a place is 3×10⁻⁴ T
The horizontal component of earth's magnetic field at a place is 3x10⁻⁴ T and the dip is tan⁻¹ (4/3). A…
7 years ago
In cyclotron, for a given magnet, radius of the semicircle traced by positive ion
In cyclotron, for a given magnet, radius of the semicircle traced by positive ion is directly proportional to (where, v=velocity…
7 years ago
If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its
If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its axis at a…
7 years ago
Magnetic induction produced at the centre of a circular loop carrying current is B.
Magnetic induction produced at the centre of a circular loop carrying current is B. The magnetic moment of the loop…
7 years ago