Question

Given :$\overset{\rightarrow}{E} = E_{0}x\widehat{i}$. Consider an imaginary cubical volume of edge l, with its edges parallel to the axes of coordinates. The charge inside this volume is –

• A. Zero
• B. e₀E₀l³
• C. $\frac{1}{\varepsilon_{0}}$E₀l³
• D. $\frac{1}{6}$e₀E₀l²

Answer 1

Answer: (D)

$\frac{1}{6}$e₀E₀l²

Answer 2

Angle at O, is 120⁰ \ $\frac { 1 } { 3 }$ part of ring is inside the sphere

\$\Sigma$q inside the sphere =