A) \[-\frac{3\,E}{2}\]
B) \[-\,E\]
C) \[-\,\frac{E}{2}\]
D) \[-\,2\,E\]
Correct Answer: C
Solution :
The intensity of electric field at a point due to change Q, distance r is given by \[E=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{(-2Q)}{r}\] \[E'=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{(Q)}{r}\] Dividing Eq. [a] by Eq. [b], we get \[\frac{E}{E'}=-\frac{2Q}{Q}\] \[\Rightarrow \,\,\,\,\,\,\,E'=-\frac{E}{2}\]You need to login to perform this action.
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