If i = 4 sin(θt + 50°) and v = 7 sin(θt - 30°), which one of these statements is true?Select one:a.i lags v by 80°b.i leads v by 20°c.i leads v by 80°d.i lags v by 20°
Question
If i = 4 sin(θt + 50°) and v = 7 sin(θt - 30°), which one of these statements is true?Select one:a.i lags v by 80°b.i leads v by 20°c.i leads v by 80°d.i lags v by 20°
Solution
The phase difference between i and v is (θt + 50°) - (θt - 30°) = 80°. Since the phase of i is greater than the phase of v, i leads v. Therefore, the correct answer is c. i leads v by 80°.
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