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  • Three point charges q, -2q and 2q are placed on x-axis at a distance x = 0,  and

Three point charges q, -2q and 2q are placed on x-axis at a distance x = 0, x=\frac{3}{4} and x = R respectively from origin as shown. If q = 2 × 10-6 C and R = 2 cm, the magnitude of net force experienced by the charge -2q is

Option: 1

5440


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\begin{aligned} & \mathrm{F}_{\mathrm{BA}}=\frac{32 \mathrm{kq}^2}{9 \mathrm{q}^2} \quad \mathrm{~F}_{\mathrm{BC}}=\frac{64 \mathrm{kq}^2}{\mathrm{R}^2} \\ & \mathrm{~F}_{\mathrm{B}}=\mathrm{F}_{\mathrm{BC}}-\mathrm{F}_{\mathrm{BA}}=\frac{544 \mathrm{kq}^2}{9 \mathrm{R}^2} \\ & =5440 \mathrm{~N} \end{aligned}

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vishal kumar

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