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A rectangular surface of side 10 cm and 15 cm is placed inside a uniform electric field of 25v/m such that the surface makes an angle 30 with the direction of electric field . Find the flux of the electric field through the rectangular surface

A rectangular surface of side 10 cm and 15 cm is placed inside a uniform electric field of 25v/m such that the surface makes an angle 30 with the direction of electric field . Find the flux of the electric field through the rectangular surface

Grade:12

2 Answers

ritik
17 Points
4 years ago
phi=E.A
SO PHI=E.A.COStheta
PHI=25.150.10-4.1.732/2=
CALCULATE IT AND GET YOUR ANSWER PLEASE APPROVE IF YOU GOT IT CLEARLY
Rishi Sharma
askIITians Faculty 646 Points
11 months ago
Dear Student,
Please find below the solution to your problem.

E = 25V/m
A = 10×10^−2×15×10^−2
=1.5×10^−2m2
Now, we know that∫ϕ=∫Eda
=E.A
=Eacosθ
As the surface make300 but we have to calculate according to area vector which is perpendicular to the surface,∴→θ=900−300=600
∴ϕ = Eacosθ
= 25×1.5×10^−2×cos600
= 0.1875Nm2/C

Thanks and Regards

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