Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 110 sin (50?t)What is the period and amplitude of the current?
A. period = 
second, amplitude = 50
B. period = 50? seconds, amplitude = 
C. period = 
second, amplitude = 300
D. period = 
second, amplitude = 110
Answer: D
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