Problem 2

An ideal capacitor of capacitance

C=10\,\mu\mathrm F

is connected to an ideal source holding voltage

V=12\,\mathrm V

. 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.prevStep problems.proof.nextStep

\\boxed{Q=120\\,\\mu\\mathrm C,\\quad U=0.720\\,\\mathrm{mJ}}

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Collect the results for all parts in one place. This makes clear that they use the same data and a consistent sign convention.