Engineering Board Exam Reviewer · Alternating Current and Voltage · medium
Given v=100 ( t+20°) V and i=8 ( t-40°) A, which statement is correct?
- i leads v by 60°
- v leads i by 20°
- v leads i by 60°
- i leads v by 20°
Answer
C. v leads i by 60°
Solution
The phase difference is 20°-(-40°)=60°. The wave with the larger phase angle leads, so v leads i by 60°.
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