The RMS value of the voltage u(t} = 3 + 4cos (3t is

1.	The RMS value of the voltage u(t} = 3 + 4cos (3t is
A.	\[\sqrt{17}V\]
B.	\[5V\]
C.	\[7V\]
D.	\[(3+2\sqrt{2})\,\,V\]
Answer» B. \[5V\]

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The RMS value of the voltage u(t} = 3 + 4cos (3t is

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