Question

a conductor of 10 cm radius placed on a insulated stand having electric field 10N/ coulomb distributed in the surface of the sphere find the electric field at the center​

Answer 1

Electric field intensity (E) at a distance (d) from the centre of a sphere containing net charge q is given by the relation,

E=4π∈0d2q

Where,

q= Net charge = 1.5×103 N/C

d= =20cm=0.2m

And, 4π∈01=9×109Nm2C−2 

∴q=E(4π∈0)d2

       =9×1091.5×103×(0.2)2

       =6.67×109C

       =6.67nC.

Because the electric field lines point radially inwards, the charge on the sphere is negative. Therefore, the net charge on the sphere is 6.67 nC.

Explanation:

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