Question

Electric field at a point outside a spherical shell without gauss law

Answer 1

Explanation:

electric field outside point can be calculated using

E=KQ/r^2 because sphere can be considered as a point charge

for calculating we define surface charge density of sphere by using formula

sigma=q/A

sigma=q/4πr^2

q=sigma×4πr^2

put the values of q in KQ/r^2 you will get the answer