**Question:**

Four point charges $-q,+q,+q$ and $-q$ are placed on $y$-axis at $y=-2 d, y=-d, y=+d$ and $y=+2 d$, respectively. The magnitude of the electric field $\mathrm{E}$ at a point on the $x$-axis at $x=\mathrm{D}$, with $\mathrm{D}>>d$, will behave as:

Correct Option: 4

**Solution:**

### Related Questions

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