- #1
DriggyBoy
- 19
- 0
I was shuffling through the previous years question papers & I got this question !
'' A sensitive instrument is influenced by the strong electric field. Write a possible way to prevent this effect. Why is the electric field normal to the surface? ''
I am not sure what the answer it. But this is what i figured out.
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It is obvious that the instrument is a conductor. Therefore it has got excess of free electrons. These free electrons will arrange them in such a way that develops an inner electric field which will cancel the electric field of the outside. There will be accumulation of negative charges on one side & positive on the other. Hence the effect of the outside electric field is neutralized.
Electric field lines are always perpendicular to the conducting surface; because it they form any other angle with respect to the surface they would cancel each other out because of symmetry.
"
'' A sensitive instrument is influenced by the strong electric field. Write a possible way to prevent this effect. Why is the electric field normal to the surface? ''
I am not sure what the answer it. But this is what i figured out.
"
It is obvious that the instrument is a conductor. Therefore it has got excess of free electrons. These free electrons will arrange them in such a way that develops an inner electric field which will cancel the electric field of the outside. There will be accumulation of negative charges on one side & positive on the other. Hence the effect of the outside electric field is neutralized.
Electric field lines are always perpendicular to the conducting surface; because it they form any other angle with respect to the surface they would cancel each other out because of symmetry.
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