Q.
Three infinitely long charge sheets are placed as shown in figure. The electric field at point $P$ is
A) $\frac{2\sigma}{\varepsilon_{0}}\widehat{k}$
B) $- \frac{2\sigma}{\varepsilon_{0}}\widehat{k}$
C) $\frac{4\sigma}{\varepsilon_{0}}\widehat{k}$
D) $- \frac{4\sigma}{\varepsilon_{0}}\widehat{k}$
Explanation
(b) $\overrightarrow{E} = - \frac{\sigma}{2\varepsilon_{0}}\widehat{k} - \frac{2\sigma}{2\varepsilon_{0}}\widehat{k} - \frac{\sigma}{2\varepsilon_{0}}\widehat{k} = - \frac{2\sigma}{\varepsilon_{0}}\widehat{k}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.