KCET 2023 Physics Solved Paper

A cubical Gaussian surface has side of length a=10‌cm. Electric field lines are parallel to x-axis as shown. The magnitudes of electric fields through surfaces ABCD and EFGH are 6kNC−1 and 9kNC−1 respectively. Then the total charge enclosed by the cube is [. Take ε0=9×10−12Fm−1]