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)

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

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

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

A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r from its centre :-Decreases as r increases, for r < RDecrease as r increase, for 0 < r < ∞Decrease as r increase, for R < r < ∞It discontinuous at r = R