Questions -
Problem 1 - Given the sinuosidal voltage v(t) = 50 cos(30t+10^{o}) V, find: (a) the amplitude V_{m} (b) the period T, (c) the frequency f and (d) v(t) at t = 10 ms.
Problem 2 - A current source in a linear circuit has - i_{s} = 15 cos(25πt + 25^{o}) A
(a) What is the amplitude of the current?
(b) What is the angular frequency?
(c) Find the frequency of the current.
(d) Calculate i_{s} at t = 2 ms.
Problem 3 - Express the following functions in cosine form:
(a) 10 sin(ωt + 30^{o})
(b) -9sin(8t)
(c) -20sin(ωt + 45^{o}))
Problem 4 - Given v_{1} = 45 sin(ωt + 30^{o}) V and v_{2} = 50 cos(ωt - 30^{o} V), determine the phase angle between the two sinusoids and which one lags the other.