Problem 2
An ideal capacitor of capacitance is connected to an ideal source holding voltage . After electrostatic equilibrium is reached, energy is stored in the electric field between the plates; neglect fringing. (a) Find the first requested quantity. (b) Find the second quantity. (c) Determine the final result and check its units (a) Find the charge on the capacitor. (b) Find its stored electric-field energy. (c) Evaluate both results in SI units.
problems.proof.stepOf
problems.proof.analysis
Rearranging the governing relation isolates the first requested result. Keeping the signs explicit also checks that its direction and magnitude are physically sensible.