The equation of alternating of alternating current for a circuit is gi

1.	The equation of alternating of alternating current for a circuit is given by I = 50 cos 100 πt. Calculate frequency of alternating current. A) 100 Hz B) 50 Hz C) 25 Hz D) 75 Hz
Answer» The correct option is B) 50 Hz. Here, I = 50 cos100 πt Compare it with the standard form I = I₀ cos ωt, we get I₀= 50 A ω = 2π, v = 100π/2π = 50 Hz

The equation of alternating of alternating current for a circuit is given by I = 50 cos 100 πt. Calculate frequency of alternating current. A) 100 Hz B) 50 Hz C) 25 Hz D) 75 Hz

Answer»

The correct option is B) 50 Hz.

Here, I = 50 cos100 πt

Compare it with the standard form I = I₀ cos ωt, we get I₀= 50 A

ω = 2π,

v = 100π/2π

= 50 Hz