AC Theory T4

will the voltage in a RL circuit

• lead

• lag

the terminal voltage of a capacitor must be less than 50V within

• 1 minute

• 5 minutes

• 3 minutes

• 30 seconds

what two things does a practical inductor have

• resistance and impedance

• reactance and impedance

• inductive reactance and resistance

• inductive reactance and capacitive reactance

the more reactance in a circuit the angle will

• increase

• decrease

what is the opposition to current in a circuit containing more than one component

draw a phasor diagram showing the voltage across a capacitor and a resistor

Answer explanation

it should resemble a right angle triangle and it should be lagging (or under the reference line) a resistor is in phase and a capacitor is lagging by 90 degrees (the same as a voltage or impedance triangel

what equation will we use to find the voltage across a capacitor 

what equation will we use to find total impedance