Resistors in AC Circuits

9 Alternating current is passed through components, just as direct current is. Resistors interact with alternating current just as they do with direct current.

Question

Suppose an AC signal of 10 Vpp is connected across a 10-ohm resistor. What is the current through the resistor? _____

Answers

Use Ohm's law:

equation

Because the voltage is given in pp, the current is a pp current.

10 An AC signal of 10 Vrms is connected across a 20-ohm resistor.

Question

Find the current. _____

Answer
equation

Because the voltage was given in rms, the current is in rms.

11 You apply an AC signal of 10 Vpp to the voltage divider circuit, as shown in Figure 5.5.

Figure 5.5

5.5

Question

Find Vout. _____

Answer
equation

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