First slide

Force between multiple charges

Question

Two point charges each $10^{- 6} C$ are placed at $A (\hat{i} + \hat{j} + \hat{k}) m$ and $B (2 \hat{i} + 3 \hat{j} + 3 \hat{k}) m$ . The force between those charges is

Easy

A

1 N
B

$10^{- 1} N$
C

$10^{- 2} N$
D

$10^{- 3} N$

Solution

The separation between the charges $\sqrt{{(2 - 1)}^{2} + {(3 - 1)}^{2} + {(3 - 1)}^{2}} m = 3 m$
The force between the charges $F = \frac{1}{4 {πε}_{0}} \frac{q_{1} q_{2}}{r^{2}} = \frac{9 \times 10^{9} \times 10^{- 12}}{3^{2}} = 10^{- 3} N$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App