Question

value of electric field at centre of sphere

Answer 1

Heyy

It's sneha

Here is ur answer ⏩⏩⏩

The electric field lines do not pass through a circle or it donot exist inside the closed surface

So electric field inside a sphere ( closed path ) is zero or negligible


Hope it's helpful


#deep

Answer 2

The electric potencial is the same for the whole conductive sphere and the ekectric field is the potencial gradient (maximum derivative) vector, but not existing any gradient on the sphere the field is zero.

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Nikhil US, I like to think practically.

Answered Nov 22, 2015

The electric field at the centre of any hollow sphere due to a charge on the surfac of the sphere would be zero. This applies anywhere inside the spherical shell it needn't be at the centre. This is because the fields cancel each other. And it applies for all positions inside the shell. At the centre it is equidistant from all other points and thereby the fields cancel each other. At other points inside the shell an electric field acts on it by all points at the surface by

E=k×qr2E=k×qr2

Since the charge is concentrated in a lesser area if the distance from the point to the surface is less thus when q is less then r is more and thereby it is still strong to counter the force at the point in the opposite face of the sphere. Thereby the net electric field at the centre of a sphere is zero.

It is also due to this reason that we use a metallic spherical shell to cover instruments which may be sensitive to external fields to take measurements so as to reduce the effect from outside fields which may interfere with the measurements.

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Ayush Oksiya, B.tech Engineering Physics, Indian Institute of Technology, Guwahati (2019)

Answered Feb 8, 2016

Zero.

For all conducting closed surfaces electric field at any point inside it due to some external charge is zero.

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