Question

A cone of base radius R and height h is located in a uniform electric field $\overrightarrow{E}$ parallel to its base. The electric flux entering the cone is :

• A. $\frac{1}{2}$ E h R
• B. E h R
• C. 2 E h R
• D. 4 E h R

Answer 1

Answer: (B)

E h R

Answer 2

flux $\phi = E\cdot A_{\bot}$
$= E\left(\frac{1}{2}h\times2R\right)$
$= Ehr$