AP EAMCET202124 Aug 2021Morning ShiftPhysicsElectrostaticsActual
A circular plate sheet of radius 10 ~cm is placed in a uniform electric field of 2 3 10^5 NC ⁻¹ , making an angle of 60^ with the field. Then, find the electric flux through the sheet.
Options
- A1.36 10^2 Nm ^2 C ⁻¹
- B9.42 10^3 Nm ^2 C ⁻¹
- C0.515 10^2 Nm ^2 C ⁻¹
- D0.515 10^4 Nm ^2 C ⁻¹
Correct answer
B. 9.42 10^3 Nm ^2 C ⁻¹
Step-by-step solution
Given that, radius of plate, aligned R & =10 ~cm & =10 10⁻² ~m aligned Uniform electric field, E=2 3 10^5 NC ⁻¹ Since, the angle between plate and electric field is 60^ . Then, angle between normal to the plate and electric field, =90^ -60^ =30^ . By using expression of electric flux, aligned & =E A =2 3 10^5 (10 10⁻² )^2 30^ & =9.42 10^3 ~N - m ^2 C ⁻¹ aligned