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Electric Charges And Fields

Question

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Two equal charges are separated by a distance ‘d’. A third charge placed on a perpendicular bisector at x distance will experience maximum coulomb force when
$x = d \sqrt{2}$
$x = d / 2$
$x = \frac{d}{2 \sqrt{2}}$
$x = \frac{d}{2 \sqrt{3}}$

Solution

A.

x = d \sqrt{2}

Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?

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