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"The two rods have the same length (in S) and contain the
same number of charges." why?
Considering that the negative rod has movement, it should have a shorter length than the positive rod according to a relativity!
We connect the charged capacitor to the no-charged capacitor (consider the wires to be ideal R=0), the final energy is less than the initial energy of the system. Where is the lost energy? (see example blew)
The capacity of the capacitor is about: $$ C= \frac {k \epsilon_0 A} {d} $$
The charge stored in the capacitor is: ## q = c v ##
The Coulomb force between two capacitor plates is: $$ F = \frac {1} {4 \pi \epsilon_0} \frac {q^2} {d^2}= \frac { k^2 \epsilon_0 A^2 v}...
Consider Parallel-Plate Capacitor whose plate dimensions are 1 square meter and the distance between the plates is 1 mm, and it is filled with dielectric to a factor of 1000. The calculation shows that the Coulomb force between the two plates is about 10^8 newtons! ! Can't believe it or...
Do the plates of the capacitor exert a force on each other due to opposite electrical charges? Consider a planet capacitor. A simple calculation shows that this force must be very large. If you are not convinced of the magnitude of the force, I will give a simple example.
Suppose we put a strong insulator under our feet. In this case, when we connect the test light to the electrical outlet, the light of the test light lights turn on. I wonder how the electric current can pass through the strong insulator. If we calculate, the electric current cannot be more than...
Consider a metal sphere connected to one end of the battery and the other end of the battery to be connected to the ground. Does the metal sphere become electrically charged with this method?
Suppose there is an electric charge of 350 micro coulombs in space. The electric field at a distance of less than one meter will be more than 3,000,000 volts/meter considering that this field is greater than the electric breakdown of air and the charge has no place to discharge, what happens...
The effect of volume on the internal energy is meaningful only in diabatic processes, for example, when heat is added to the system at a constant volume and the internal energy increases, but in adiabatic processes, when the volume is constant, the work done on the system is zero and the...