The circuit below shows some of the circuitry in a small toy robot. When the circuit is on the robot moves its arms, the motor,
and blink the light on its head, the lightbulb.
A. How much current Is in the circuit when these things are happening? Hint defined the total resistance of the circuit add the two resistances together.
B. What is the voltage between point P and the battery?
A. How much current Is in the circuit when these things are happening? Hint defined the total resistance of the circuit add the two resistances together.
B. What is the voltage between point P and the battery?
1 answer:
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Answer
given,
wavelength (λ)= 500 n m
thickness of film= 10⁻⁴ cm
refractive index = μ = 1.375
distance traveled is double which is equal to 2 x 10⁻⁴ cm
a) Number of wave
N = 2.91
N = 3
b) phase difference is equal to
Reflection from the first surface has a 180° (½λ) phase change.
There is no phase change for the 2nd surface reflection and there is no phase difference for the 2nd wave having traveled an exact whole number of waves.
net phase difference =
= 270°