A total charge of 5µC is distributed uniformly on the surface of the thin walled

A total charge of 5µC is distributed uniformly on the surface of the thin walled semispherical cup. If the electric field strength at the centre of the hemisphere is 9×10⁸NC⁻¹, then the radius of the cup is
{1/4πε₀=9×10⁹N-m²C⁻²}

Options

(a) 5mm
(b) 10mm
(c) 5cm
(d) 10cm

Correct Answer:

5mm

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. Time period of oscillation of a magnet is 2 sec. When it is remagnetised
  2. In a pure capacitive A.C circuit, current and voltage differ in phase by
  3. Length of second pendulum is
  4. A block of mass 5 kg is moving horizontally at a speed of 1.5 m/s. A perpendicular force
  5. The work function of metals is in the range of 2 eV to 5 eV.