# A Point Charge of 2.0 μC is at the Centre of a Cubic Gaussian Surface 9.0 cm on Edge. What is the Net Electric Flux Through the Surface? - Physics

Numerical

A point charge of 2.0 μC is at the centre of a cubic Gaussian surface 9.0 cm on edge. What is the net electric flux through the surface?

#### Solution

Net electric flux (ΦNet) through the cubic surface is given by,

phi_"Net" = "q"/in_0

Where,

0 = Permittivity of free space

= 8.854 × 10−12 N−1 Cm−2

q = Net charge contained inside the cube = 2.0 μC = 2 × 10−6 C

∴ phi_"Net" = (2 xx 10^-6)/(8.854 xx 10^-12)

= 2.26 × 105 N m2 C−1

The net electric flux through the surface is 2.26 × 105 N m2 C−1.

Concept: Electric Flux
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#### APPEARS IN

NCERT Physics Part 1 and 2 Class 12
Chapter 1 Electric Charges and Fields
Exercise | Q 1.19 | Page 48
NCERT Class 12 Physics Textbook
Chapter 1 Electric Charge and Fields
Exercise | Q 19 | Page 48

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