A capacitor is charged to

PHYSICS · Multi-part · Fermi University Physics · Electricity, Magnetism & Electromagnetism · Electric current and circuits · Electric current and circuits

Electronics for Measurement, Ch Capacitors, inductors and the time constant

Problem

10\,\mathrm{\mu F}

capacitor is charged to

15\,\mathrm{V}

. At

t = 0

an ideal switch connects it directly across a

1\,\mathrm{k\Omega}

resistor, so that it discharges. ((a)) State the time constant

\tau

of the discharge. ((b)) Find the capacitor voltage at

t = 20\,\mathrm{ms}

. ((c)) Find the total energy dissipated in the resistor as the capacitor discharges completely.

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