AP EAMCET202023 Sep 2020Morning ShiftPhysicsAlternating CurrentActual
In an AC circuit, the current flowing is I = 5 sin 100 t - π 2 A and the potential difference is e = 200 sin ( 100 t ) . The power consumption is equal to
Options
- A1000   W
- B40   W
- C20   W
- D0   W
Correct answer
D. 0   W
Step-by-step solution
Given current I = 5 sin 100 t - π 2 A voltage e = 200 sin ( 100 t ) Phase difference between current and voltage ϕ = π 2 Power in AC circuit P = v rms i rms cos ϕ ⇒ P = v rms i rms cos π 2 = 0   W