. What is the relation between electric field and coulomb's force?
Answers
hey dude ....here u go
F = qE
where:
F is coulomb's force
and E is electric field
Answer:
Explanation:
In electrostatics, there is no difference between the two, except philoosphical point of view. The electric field at a point is just the Coulomb law from all the charges around, divided by the test charge you imagine placing at this point. But this identity only holds in the limit that the speed of light is infinite.
When you have moving charges, the field does not respond instantaneously, so there is residual field that keeps track of where the charges used to be. This field has disturbances, which act to update the field to the new position. These disturbances have both electric and magnetic component.
The local disturbances can travel all by themselves, as fields liberated from their sources. They go out in electric/magnetic field waves, which travel at the speed of light, which is not a coincidence, because those electromagnetic waves are light.