Electrostatics Question 240
Question: Electric potential is given by $ V=6x-8xy^{2}-8y+6yz-4z^{2} $ Then electric force acting on $ 2C $ point charge placed on origin will be [RPET 1999]
Options:
A) + 2
B) ? 1
C) ? 2
D) Zero
Show Answer
Answer:
Correct Answer: A
Solution:
$ \int _{-\infty }^{0}{-\overrightarrow{E}\cdot \overrightarrow{dl}} $ = potential at centre of non-conducting ring $ =\frac{1}{4\pi {\varepsilon _{0}}}\times \frac{q}{r}=\frac{9\times 10^{9}\times 1.11\times {{10}^{-10}}}{0.5}=2volt $
