Because of the skin depth effect, the current at high frequency tends to flow at very low depth from radius. Then at high frequency the effective cross section of the wire is narrower than at DC.
Fro example skin depth at 100 kHz is 0.206 mm (0.008”), a wire more thicker than AWG26 could be a waste of copper, better use a bunch of thin wire (Litz wire) to rise the Q factor.
Answer:
Even though it has been found that there is a correlation between the specific high school a student attends and their college graduation rate, there is a much stronger correlation between a student's high school GPA, regardless of what high school they attended, and that student completing college.
Explanation:
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Answer:
∆x = A / √2
Explanation:
If the mass is oscillating in a SHM, the total mechanical energy at any time is given by the following equation:
½ k A2 = ½ k (∆x)2 + ½ mv2
We are told that at the point that we are looking for, the elestic potential energy, and the kinetic energy, are equal each other.
As we have no information regarding kinetic energy, we can replace it with the equivalent in potential energy, so we have:
½ k (∆x)2 + ½ mv2 = 2 (1/2) k (∆x)2 = k (∆x)2
We know that this energy must be equal to ½ k A2, so we can put the following:
½ k A2 = k (∆x)2
Simplifying common terms, and solving for the displacement from the equilibrium point (∆x), we get:
∆x = A / √2
Explanation:
As electricity passes through a wire, some of the electrical energy is converted to heat. The more current that flows through a wire, the more heat is generated. If you double the current passing through a wire, the heat generated will increase 4 times!