Advertisements
Advertisements
प्रश्न
What is the function of uniform radial field and how is it produced?
Advertisements
उत्तर
In uniform radial field sinα = 1, so the torque acting on the coil will always be τ = nIBA (maximum).
To produce radial magnetic field pole pieces of permanent magnets are made cylindrical and a soft iron core is placed between them. The soft iron core helps in making the field radial.
APPEARS IN
संबंधित प्रश्न
A charge is distributed uniformly over a ring of radius 'a'. Obtain an expression for the electric intensity E at a point on the axis of the ring. Hence, show that for points at large distance from the ring, it behaves like a point charge.
The intensity of the electric field at a point at a perpendicular distance ‘r’ from an infinite line charge, having linear charge density ‘λ’ is given by:
A charged oil drop weighing 1.6 x 10-15 N is found to remain suspended in a uniform electric field of intensity 2 x 103 Nc-1. Find the charge on the drop.
A hemisphere is uniformly charged positively. The electric field at a point on a diameter away from the centre is directed ______.
An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it through the same vertical distance h. The time of fall of the electron, in comparison to the time of fall of the proton is ______.
Electric field at a point varies as r° for ______.
An isolated point charge particle produces an electric field `vecE` at a point 3 m away from it. The distance of the point at which the field is `vecE/4` will be ______.
