burak_ilhan
Mar18-04, 04:31 PM
1)two different formulas for electric field is
a)U=(1/2)Q1V1+(1/2)Q2V2+.....
b)U=\int \frac{1}{2}\epsilon.E^2dv
Using these how could we perform an experiment to test where the energy located?
2)Since the electric energy density is never negative, how can the mutual electric potential of a pair of opposite charges be negative?
My idea on the first one was following an example in the lecture:
radiowave is a very good example that the energy is on the field lines,because even you stop signalling, the field or the wave still exist in space.Any comment is welcome
a)U=(1/2)Q1V1+(1/2)Q2V2+.....
b)U=\int \frac{1}{2}\epsilon.E^2dv
Using these how could we perform an experiment to test where the energy located?
2)Since the electric energy density is never negative, how can the mutual electric potential of a pair of opposite charges be negative?
My idea on the first one was following an example in the lecture:
radiowave is a very good example that the energy is on the field lines,because even you stop signalling, the field or the wave still exist in space.Any comment is welcome