The voltage across a capacitor in a series RC circuit is given by the equation vc = 250(1 – e-25t) (a) How long after the switch is closed will the capacitor emf be 100 volts? (b) What will be the current at the instant calculated in (a)? (c) Write the equation for the current in the circuit.

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Capacitor

The capacitor is an element used to store electrical energy in the electrical field. A capacitor is a form of passive energy.