Question

The mechanical force acting per unit area of a charged conductor is :

• A. $\frac{1}{2}{k\epsilon }_{\circ }{E}^2$
• B. $\frac{a^2}{{2k\epsilon }_{\circ }}$
• C. $\frac{1}{2}{k\epsilon }_{\circ }E$
• D. both a and b

Answer 1

The correct option is C $\frac{1}{2}{k\epsilon }_{\circ }E$

The mechanical force acting

$F=ma$

$=\frac{1}{2}\frac{{ϵ}^2}{E}$

$=\frac{1}{2}K{ϵ}_{0}E$