# Electric field intensity in free space at a distance ‘r’ outside the charged conducting sphere of radius ‘R’ in terms of surface charge density ‘ a ’ is - Physics

Electric field intensity in free space at a distance ‘r’ outside the charged conducting sphere of radius ‘R’ in terms of surface charge density ‘ a ’ is............................

(a)sigma / in_0[R/r]^2

(b)in_0/sigma[R/r]^2

(c)R/r[sigma/in_0]^2

(d)R/sigma[r/in_0]^2

#### Solution

(a) sigma / in_0[R/r]^2

Electric field intensity in the free space outside the charged conducting sphere in terms of surface charged density is given as

E=sigma / in_0[R/r]^2

Concept: Electromagnetic Induction
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