The electric field at a distance 2 cm from the centre of a hollow s...

Question

The electric field at a distance 2 cm from the centre of a hollow spherical conducting shell of radius 4 cm having a charge of 2 × 10⁻³ C on its surface is:

Accepted Answer

Concept: Electric field inside a hollow conducting shell.

Key Property:
For a hollow conducting spherical shell:
• Electric field inside the shell (r < R) = 0
• Electric field outside the shell (r > R) = kQ/r²
• Electric field on surface (r = R) = kQ/R²

Given:
Radius of shell R = 4 cm
Distance of point r = 2 cm

Since r (2 cm) < R (4 cm), the point is INSIDE the shell.

Therefore: E = 0

Answer: Option (A) Zero

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