Final answer:
The voltage amplitude of the sinusoidal ac voltage source is 8.64 V.
Step-by-step explanation:
To find the voltage amplitude, we need to determine the peak voltage. The peak voltage is equal to the maximum voltage divided by the square root of 2. Therefore, the voltage amplitude is:
The question involves finding the voltage amplitude of an AC voltage source given a maximum voltage of 12.2 V. The amplitude of an AC voltage is the maximum value that the voltage reaches, which is already provided in the question, so the voltage amplitude is 12.2 V.
V = 12.2 V / sqrt(2) = 8.64 V