Question 972: Electrostats & Capacitance

Question

The net electric force on a charge of $$+3 \mu \mathrm{C}$$ at the mid-point on the line joining two charges of magnitude $$+2 \mu \mathrm{C}$$ and $$-2 \mu \mathrm{C}$$ separated by the distance of $$6 \mathrm{~mm}$$, is

Accepted Answer

From Coulomb's law
Force due to same charge is repulsive and that due to opposite is attractive.
$$F=K\left[\frac{2 	imes 3}{3^2}-\frac{2 	imes 3}{3^2}ight]=0$$

Answer

6000 N

Answer

500 N

Answer

60 N

Answer

zero

Electrostats & Capacitance

The net electric force on a charge of $+3 \mu \mathrm{C} at the mid-point on the line joining two charges of magnitude +2 \mu \mathrm{C} and -2 \mu \mathrm{C} separated by the distance of 6 \mathrm{~mm}$, is

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