Six capacitors of capacities 5, 5. 5, 5, 10 and X μ F are connected as shown in the network in the diagram.
- The value of X if the network is balanced, and
- The resultant capacitance between A and C.
Two metal spheres having charge densities 5μC/m2 and -2μC/m2 with radii 2mm and 1mm respectively are kept in a hypothetical closed surface. Calculate total normal electric induction over the closed surface.