Question

For two infinitely charged parallel sheets the electric field at P will be –

• A. $\frac{\sigma}{2x}$ – $\frac{\sigma}{2(r - x)}$
• B. $\frac{\sigma}{2\varepsilon_{0}x}$ +$\frac{\sigma}{2\pi(r - x)\varepsilon_{0}}$
• C. $\frac{\sigma}{\varepsilon_{0}}$
• D. Zero

Answer 1

Answer: (D)

Zero

Answer 2

f_A + f_C + f_B = $\frac { \mathrm { q } } { \epsilon _ { 0 } }$

Q f_A = f_C

\ f_A + f_A + f = $\frac { \mathrm { q } } { \epsilon _ { 0 } }$

\ $\phi _ { \mathrm { A } } = \frac { 1 } { 2 } \left( \frac { \mathrm { q } } { \epsilon _ { 0 } } - \phi \right)$