Net electric flux (ϕNet) through cubic surface is,
ϕNet=q∈0
∈0 =8.854×10−12N−1C2m−2
q = Net charge contained inside the cube =2.0μC=2×10−6
∴ϕNet=2×10−68.854×10−12
=2.26×105Nm2C−1
The net electric flux through the surface is 2.26×105Nm2C−1.
A point charge of 2 micro Coulomb is at the centre of a cubic Gaussian surface 9 cm on edge. What is the net electric flux through the surface?
A point charge causes an electric flux of –1.0×103Nm2/C to pass through a spherical Gaussian surface of 10.0 cm radius centred on the charge. If the radius of the Gaussian surface were doubled, how much flux would pass through the surface?
What is the value of the point charge?