Question: In a series RL circuit, what is the phase relationship between voltage and current?
Options:
Voltage leads current by 90 degrees
Current leads voltage by 90 degrees
Voltage and current are in phase
Voltage lags current
Correct Answer: Voltage lags current
Solution:
In a series RL circuit, the voltage lags the current due to the inductive reactance.
In a series RL circuit, what is the phase relationship between voltage and curre
Practice Questions
Q1
In a series RL circuit, what is the phase relationship between voltage and current?
Voltage leads current by 90 degrees
Current leads voltage by 90 degrees
Voltage and current are in phase
Voltage lags current
Questions & Step-by-Step Solutions
In a series RL circuit, what is the phase relationship between voltage and current?
Step 1: Understand that a series RL circuit consists of a resistor (R) and an inductor (L) connected in a single loop.
Step 2: Know that in an electrical circuit, voltage is the electrical potential difference, and current is the flow of electric charge.
Step 3: Recognize that inductors resist changes in current, which causes a delay in the voltage across the inductor compared to the current flowing through the circuit.
Step 4: Learn that this delay means that the voltage across the inductor reaches its maximum value after the current does, which is described as the voltage lagging behind the current.
Step 5: Conclude that in a series RL circuit, the phase relationship is such that the voltage lags the current due to the inductive reactance.
Phase Relationship in RL Circuits – In a series RL circuit, the voltage across the inductor lags the current due to the inductive reactance, which affects the phase angle between them.
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