Question 19

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?

Answer

Net electric flux (Φ_{Net}) through the cubic surface is given by,

Where, ∈0 = Permittivity of free space

= 8.854 × 10^{−12} N^{−1}C^{2} m^{−2}

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

∴

= 2.26 × 10^{5} N m^{2} C^{−1}

The net electric flux through the surface is 2.26 ×10^{5} N m^{2}C^{−1}.

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The electrostatic force on a small sphere of charge 0.4 μC due to another small sphere of charge − 0.8 μC in air is 0.2 N.

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Shah
2019-07-08 20:09:55

Why 9 cm edge length is given?

Uttu
2019-05-12 18:02:30

Wow

Ayush
2019-05-09 22:17:20

Is ko 6 se divide kyo nhi kiya

Ap
2019-04-27 11:55:23

Wrong for charge at centre of cube: Flux = q/6â¬Â°

sindhu
2019-03-04 12:12:46

ty

Vikas yadav
2018-07-16 08:25:52

Fantastic.....

akansha singh
2017-05-25 13:53:29

i cant understand please explain briefly.

- NCERT Chapter