Four charges q, 2q, -4q and 2q are placed in order at four corners of a square of side b . net field

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1. Electric Charges and Fields

hard

Four charges $q, 2q, -4q$ and $2q$ are placed in order at the four corners of a square of side $b$. The net field at the centre of the square is

A

$\frac{q}{{2\pi {\varepsilon _0}{b^2}}}$ from $+q$ to $-4q$

B

$\frac{5q}{{2\pi {\varepsilon _0}{b^2}}}$ from $+q$ to $-4q$

C

$\frac{10q}{{2\pi {\varepsilon _0}{b^2}}}$ from $+q$ to $-4q$

D

$\frac{20q}{{2\pi {\varepsilon _0}{b^2}}}$ from $+q$ to $-4q$

Solution

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Standard 12

Physics

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