Question

Figure shows a closed dotted surface which intersects a conducting uncharged sphere. If a positive charges is placed at the point $P$, the flux of the electric field through the closed surface

• A. will remain zero
• B. will become positive
• C. will become negative
• D. data insufficient

Answer 1

The correct option is C will become negative

Here the negative charge is induced on the surface of the sphere due to positive charge at P by electrostatic induction.
According to Gauss's law, the flux, $\varphi =\frac{Q_{en}}{{ϵ}_0}$
Since, $Q_{en}$ is negative so flux will be negative.