Question

plzzz Ans.. 1).Is there any electric field inside a charged conductor??
2) Arethe field lines a reality??
3) Define the physical quantity whose unit is N/c.??
4). Electric field intensity within a conductor is always zero..Why???
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Answer 1

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1 . Electric Fields Inside of Charged Conductors. ... If the electrons within a conductor have assumed an equilibrium state, then the net force upon those electrons is zero. Theelectric field lines either begin or end upon acharge and in the case of a conductor, thecharge exists solely upon its outer surface.
2. Field lines are used for explaining a wide variety of phenomenon. But is it really an accurate depiction of reality?
Is it more accurate to imagine a field in a different manner. For instance, using grey-scale colour to imagine intensity. For instance, for a positive point charge, instead of imagining infinite lines emanating from the point, we image concentric shells around the charge, of infinitesimally thin thickness and all of a different grey-scale colour. So if we imagine black to be the maximum strength(intensity) and white to be 0 intensity, you would effectively imagine an infinitely large sphere whose colour change from white at infinity to black at the centre. Rough approximation:
3. since Nstands for newton which is the unit of force and C stands for coulomb which is the unit of charge . ... The SI unit of electric field intensity is N/C .We also have another unit of electric field intensity called V/m.
4.
In electrostatics free charges in a goodconductor reside only on the surface. So the free charge inside the conductor is zero. So the field in it is caused by charges on the surface. Since charges are of the same nature and distribution is UNIFORM, theelectric fields cancel each other
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