What is the electric potential energy between two protons each of charge q and at a distance of r apart? (Permittivity of free space = εo)
If the frequency of the ac. circuit illustrated above is 500/π Hz what would be the reactance in the circuit?
(Inductance (L) = 0.9H, Capacitance (C) = \(2 \times 10^{-6}\)
