Multiple choice

An input voltage v(t) = 10$\sqrt 2$ cos(t+100) + 10$\sqrt 3$ cos (2t+10o)V is applied to a series combination of resistance R = 1 $\Omega$ and an inductance L = 1 H. The resulting steady state current i(t) in ampere is

  1. 10 cos (t + 550) + 10 cos (2t + 100 + tan-12)

  2. 10 cos (t + 550) + 10 $\sqrt{ \dfrac{3}{2} }$ cos (2t + 550)
  3. 10 cos (t - 350) + 10 cos ( 2t + 100 - tan-12)

  4. 10 cos (t - 350) + 10 $\sqrt{ \dfrac{3}{2} }$cos (2t - 350)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation