Question:
Two charges $q$ and $-3q$ are fixed on $x$-axis separated by distance $d$. Where should a third charge $2q$ be placed from $A$ such that it will not experience any force?
Two charges $q$ and $-3q$ are fixed on $x$-axis separated by distance $d$. Where should a third charge $2q$ be placed from $A$ such that it will not experience any force?
Updated On: Jul 7, 2022
- $\frac{d-\sqrt{3}d}{2}$
- $\frac{d+\sqrt{3}d}{2}$
- $\frac{d+3d}{2}$
- $\frac{d-3d}{2}$
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The Correct Option is B
Solution and Explanation
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Concepts Used:
Electric Field
Electric Field is the electric force experienced by a unit charge.
The electric force is calculated using the coulomb's law, whose formula is:
\(F=k\dfrac{|q_{1}q_{2}|}{r^{2}}\)
While substituting q2 as 1, electric field becomes:
\(E=k\dfrac{|q_{1}|}{r^{2}}\)
SI unit of Electric Field is V/m (Volt per meter).