A disk of radius 10 cm carries a uniform surface charge density of 6.0 µC/m².The electric field on the axis of the disk at a distance of 10 cm is approximately A)0.34 MN/C B)68 kN/C C)99 kN/C D)0.54 MN/C E)18 kN/C

Question

Quizplus · Accepted Answer

The electric field on the axis of a uniformly charged disk can be calculated using the formula for a disk: E = (σ/2ε₀) * (1 - z/√(z² + R²)), where σ is the surface charge density, ε₀ is the permittivity of free space, z is the distance from the disk, and R is the radius of the disk. Substituting the given values, the electric field is approximately 99 kN/C.

A Disk of Radius 10 Cm Carries a Uniform Surface