The correct electric flux expression among the following will be ______.a) ∫ E→. ds→b) ∫ E2→.d2s→c) ∫ 2E→ −1.d2s→d) ∫ 2E→. 2dl→

Correct Option: (a)

Explanation: The number of field lines perpendicularly crossing a surface area is known as electric flux. Therefore, field lines crossing through small area ds are E.ds, because the electric field intensity (E) is defined as the number of electric field lines crossing through the unit cross-section area. Hence, the flux in the entire surface can be determined by taking the integral value.