Choosing R and C for Our RC Circuit

In order to control the rate at which voltage changes in the circuit, we must consider the values of the capacitor and resistor. In a circuit, the capacitor controls the voltage across its terminals depending upon how charged it is. The resistor limits the amount of current passing through the capacitor, which in turn affects the rate at which the capacitor charges.

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Defining a Capacitor

A capacitor is an electronic component that stores energy in the form of an electric field.

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