What is the phase difference between the voltage and current in a purely resistive AC circuit? (2021)
Practice Questions
1 question
Q1
What is the phase difference between the voltage and current in a purely resistive AC circuit? (2021)
0°
45°
90°
180°
In a purely resistive circuit, the voltage and current are in phase, so the phase difference is 0°.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the phase difference between the voltage and current in a purely resistive AC circuit? (2021)
Solution: In a purely resistive circuit, the voltage and current are in phase, so the phase difference is 0°.
Steps: 5
Step 1: Understand what a purely resistive AC circuit is. It means the circuit only has resistors and no capacitors or inductors.
Step 2: Know that in an AC circuit, voltage and current can be out of phase, meaning they can reach their maximum and minimum values at different times.
Step 3: In a purely resistive circuit, the voltage and current reach their maximum and minimum values at the same time.
Step 4: Since the voltage and current are at their maximum and minimum together, they are said to be 'in phase'.
Step 5: When two waveforms are in phase, the phase difference between them is 0°.
