Compare and contrast the velocity and speed equation
1 answer:
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1. Frequency:
The frequency of a light wave is given by:
where
is the speed of light
is the wavelength of the wave
In this problem, we have light with wavelength
Substituting into the equation, we find the frequency:
2. Period:
The period of a wave is equal to the reciprocal of the frequency:
The frequency of this light wave is (found in the previous exercise), so the period is:
The maximum current in an ac circuit is related to the rms current by:
where
is the rms current and 
is the maximum current.
If we re-arrange the formula and we use
, we can find the value of the maximum current:
where
If we re-arrange the formula and we use