Question Detail
Question
The equation of a current is i = I_m sin(2ωt). Frequency in Hz?
Correct Answer
Option A is the correct answer.
Detailed Explanation
General form i = I_m sin(2πf t). Here argument is 2ωt = 2(2πf?) Wait, ω = 2πf, so 2ωt = 4πf t. Then 2πf_new = 4πf → f_new = 2f. But f original = ω/2π. So f_new = 2×(ω/2π) = ω/π.
Hint
Compare sin(2ωt) with sin(2πf t).