A charge of 20 μC is placed at the centre of an open and cylindrical vessel. The net flux through the cylinder is Figure Share with your friends Share 0 Ravindra Kumar Yadav answered this Dear Student, When charge Q is placed at the centre than only half of the charge will contribute to the flux.because half will lie inside the surface and half will lie outside the surface.So flux = Q2ε0 Best Regards 0 View Full Answer