Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

Which of the following trigonometric functions does the electric supply at our homes vary as?

  1. Tangent
  2. Sine
  3. Cosine
Options:

Both 1 and 2

Both 1 and 3

Both 2 and 3

All 1, 2 and 3

Correct Answer:

Both 2 and 3

Explanation:

Electric supply at our homes is AC voltage. It is nothing but a sine wave signal of current. The difference between a sine and a cosine signal is only a phase shift of 90 degrees.