Resistors and Circuits

A resistor is connected to an AC power supply. The current in this circuit ____

• is in phase with the voltage

• leads the voltage by 90^o

• lags the voltage by 90^o

• leads the voltage by 45^o

• lags the voltage by 45^o

The current in a pure resistive AC circuit differs in phase with the applied voltage by what angle?

• 0^o

• 45^o

• 90^o

• 180^o

• 360^o

The voltage output of an AC source is given by Δv = 300sin(ωt). What is the rms current in the circuit when the source is connected to a 100Ω resistor?

• 3 A

• 2.12 A

• 1.14 A

• 4.24 A

Determine the maximum power in an AC generator having a rms voltage of 17V and rms current of 0.75A.

• 51 W

• 6.37 W

• 25.5 W

• 17 W

What is the rms current in shown in this graph?

• 2.83 A

• 4 A

• 5.66 A

• 84 A