fiber-optic cable is composed of two concentric layers, called the core and the cladding, as illustrated in Figure 3-1. The core and cladding have different refractive indices, with the core having a refractive index of n1, and the cladding having a refractive index of n2. The index of refraction is a way of measuring the speed of light in a material. Light travels fastest in a vacuum. The actual speed of light in a vacuum is 300,000 kilometers per second, or 186,000 miles per second.
Given: Velocity of light c = 3.00 x 10⁸ m/s
Frequency f = 7.65 x 10⁷/s
Required: Wavelength λ = ?
Formula: λ = c/f
λ = 3.00 x 10⁸ m/s/7.65 x 10⁷/s
λ = 3.92 m
Answer:
Ohm's law: I = V / R
Explanation:
V, I, and R, the parameters of Ohm's law
with
V = voltage in Volt
I = current in Ampere
R = resistance in Ohm
Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality.
The following equation is known as Ohm's law:
I = V / R
You can also write Ohm's law as
V = I * R
You can also write Ohm's law as
R = V / I
Ohm's law states that the R in this relation is constant, independent of the current
