Electrician Red Seal · Question
The phase relationship between voltage and current in a purely inductive AC circuit is:
In a purely inductive circuit, the opposition to the change in current (inductive reactance) causes the current to lag behind the voltage. The theoretical phase
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Question: The phase relationship between voltage and current in a purely inductive AC circuit is:
Answer options:
- Current leads voltage by 90 degrees.
- Voltage and current are in phase. ✅ Voltage leads current by 90 degrees.
- Voltage leads current by 45 degrees.
Correct answer: Voltage leads current by 90 degrees.
Explanation: In a purely inductive circuit, the opposition to the change in current (inductive reactance) causes the current to lag behind the voltage. The theoretical phase shift is 90 degrees, meaning the voltage peak occurs 90 degrees before the current peak.
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- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
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