Question

A sinusoidal voltage VI leads another sinusoidal voltage V2 by 180 degree. Then
O A. voltage v2 leads voltage vl by 180 degree
O B. both voltage have their zero values at the same time.
O C. both oltage have their peak values at the same time.
O D. all of the above.​

Answer 1

Explanation:

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Answer 2

Answer:

When a sinusoidal voltage $V_{1}$ leads to another sinusoidal voltage $V_{2}$ by 180 degrees, then B. both voltage have their zero values at the same time.

Explanation:

• If one sinusoidal voltage leads another by 180 degrees, it means that one voltage reaches its peak value when the other voltage reaches its minimum value and vice versa.
• This is because a phase shift of 180 degrees corresponds to a half-cycle shift, where the waveform is flipped upside down.

• Therefore, option B is correct.
• This is because when one voltage reaches its maximum value (peak), the other voltage reaches its minimum value (trough), and both voltages cross the zero point at the same time.
• Option A is incorrect because if one voltage leads the other by 180 degrees, it means that the other voltage lags the first voltage by 180 degrees.
• Option C is also incorrect because if one voltage leads the other by 180 degrees, it means that the two voltages have opposite phases, so they will not have their peak values at the same time.
• Therefore, When a sinusoidal voltage $V_{1}$ leads to another sinusoidal voltage $V_{2}$ by 180 degrees, then B. both voltages have their zero values at the same time.

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