A small circular ring has a uniform charge distribution. On a far-off axial point at a distance x from the centre of the ring, the electric field is proportional to :-x–1x–3/2x–2x5/4

A semicircular ring of radius 0.5 m is uniformly charged with a total charge of 1.4 ´ 10–9 C. The electric field intensity at the centre of this ring is :–

A circular ring of radius a carries a uniform charge ρLC/m and placed on XY- plane with axis the same as the Z-axis then examine the electric field intensity E at (0,0,h), (0,0,-h), (0,0,h), and (0,0,0)

The linear charge density on the upper half of a segment of ring is λ and at the lower half, it is –λ. The direction of electric field at the centre O of the ring is :-along OAalong OBalong OCalong OD

Total charge of 1 μC is non-uniformly distributed on a ring of radius 2 m, the potential at the centre of the ring is

There is a uniform charge distribution given by λ = 3.163 ⋅ 10-8 C/m𝜆 = 3.163 · 10-8 C/m along a thin wire of length L. The wire is then curved into a semicircle that is centered about the origin, so the radius of the semicircle is R = Lπ.𝑅 = 𝐿𝜋. The magnitude of the electric field at the center of the semicircle is 8.788E3 N/C. What is value of L?  m