First slide

Electrostatic force

Question

A charge q₁ exerts some force on a second charge q₂. If third charge q₃ is brought near, the force of q₁ exerted on q₂

Easy

A

Decreases
B

Increases
C

Remains unchanged
D

Increases if q₃ is of the same sign as q₁ and decreases if q₃ is of opposite sign.

Solution

The force will still remain $\frac{q_{1} q_{2}}{4 {πε}_{0} r^{2}}$

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