A charge moving relative to some observer produces magnetic field in space around it. Now I want to ask that how does the magnetic field of the charge at any fixed point varies as the charge passes by. Or is the B field only dependent on current and not a single moving charge?
If I introduce...
So far I have came to know that when a charge is accelerated the electric field magnitude around the charge changes and the effect is not felt instantaneously. The change in magnitudes of electric and magnetic field travels outwards at speed of light creating the so called EM wave.
So the EM...
What this magnitude(value) signifies?This magnitude can give us force but if it itself is not a force then what is the significance of this magnitude?Is this magnitude something very real/physical or just a man made concept?
Does this means that if a field lies in a space energy also...
I read in a book that Electromagnetic fields propagate at speed of light and carry energy and momentum.
Let's take electric field for example. Electric field is none other than a force per unit coulomb.So
1.How could a force(here field) move as force has no property of moving as force causes...
Are you talking about excitation of field?
i.e. If the "Electron Field" is excited at a particular position an electron is created?
Does the field actually moves or just the magnitude changes? What is the unit of its magnitude?
If electron is stationary the field will not oscillate and if it is...
Every moving object has a wave associated with it. If a electron is moving with a speed v we can use ##\lambda = \frac{h}{mv}## to calculate the wavelength of the associated wave and thus the frequency can be calculated. This frequency denotes some kind of oscillation. So what is oscillating here?
No that's not what I am talking about. I am just talking about the term that causes it to depend on time( and not taking into context the term that causes it to vary in space) thus causing its derivative to still depend sinusoidally on time(though it may or may not very in space) as to what Dale...
If a time varying magnetic field exists in vertically downwards direction in a region A, an electric field is induced in the direction perpendicular to it i.e. in horizontal plane. How to find the direction of the E field in the horizontal plane?What factors decide the direction of the E field...
That's what I am trying to ask. How to get the variation resulting in induced field being ahead of inducing field because all the variations we know have the induced field at the same place as the inducing field is except the fact that the induced field is perpendicular to inducing field.
If B is a sinusoidal function then its derivative would also be a sinusoidal function. Consider B to be proportional to ##\sin{\omega t}## where ##\omega## is the angular frequency of the oscillating charge, so the derivative of it with respect to time would be depended on ##\cos{\omega t}##. So...
Thanks for your answer but I still have a doubt as the below condition contradicts it:
If a region A has a time varying magnetic field along with a conductor(perpendicular to magnetic field) placed in it then an electric field would get induced in the conductor due to change of magnetic flux...
An EM wave is nothing but just magnetic and electric fields regenerating each other. Now if a charge oscillates and it produces sinusoidally varying magnetic field which induces an electric field perpendicular to it at the same place.This induced electric field even varies sinusoidally thus...
JJ Thompson performed experiment on cathode rays and found out the charge to mass ratio of electron but what led him to conclude that the particle existed INSIDE the atom. Till that time atoms were known to be indivisble but how did he concluded that the particles(electrons) existed inside atoms?