Electric Charges And Fields Class 12 Ncert Solutions Pdf Download
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(b) In macroscopic or large scale charges, the charges used are huge as compared to the magnitude of electric charge. Hence, quantization of electric charge is of no use on macroscopic scale. Therefore, it is ignored and it is considered that electric charge is continuous.
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In Electrostatic we deal with charges at rest so there is no current inside or on the surface of the conductor i.e. in the static situation, the electric field is zero everywhere inside the conductor. This is the basic property of a conductor. A conductor has free electrons. As long as electric field is not zero, the free charge carriers would experience force and drift and re distribute themselves in such a way so that net electric field inside a conductor is zero.
1____In macroscopic or large scale charges, the charges usedare huge as compared to the magnitude of electric charge. Hence,quantization of electric charge is of no use on macroscopic scale.Therefore, it is ignored and it is considered that electric charge iscontinuous.
Carefulmeasurement of the electric field at the surface of a black boxindicates that the net outward flux through the surface of the box is8.0 103N m2/C.(a) What is the net charge inside the box? (b) If the net outwardflux through the surface of the box were zero, could you concludethat there were no charges inside the box? Why or Why not?
Therefore, the electricfield just outside the conductor is.This field is a superposition of field due to the cavity andthe field due to the rest of the charged conductor.These fields are equal and opposite inside the conductor, and equalin magnitude and direction outside the conductor. 5376163bf9
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