First slide

Electrostatic potential

Question

Charges 5 $μ$ C, –2 $μ$ C, 3 $μ$ C and –9 $μ$ C are placed at the corners A, B, C and D of a square ABCD of side 1 m. The net electric potential at the centre of the square is

Moderate

A

–27 kV
B

$- 27 \sqrt{2} kV$
C

– 90 kV
D

Zero

Solution

$V_{net} = \frac{1}{4 {πε}_{0}} [\frac{Q_{net}}{d}] = 9 x 10^{9} \frac{[5 - 2 + 3 - 9] x 10^{- 6}}{1 / \sqrt{2}} = 9 x 10^{+ 3} [- 3 \sqrt{2}] = - 27 \sqrt{2} kV$

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