Two Concentric Imaginary Spherical Surfaces of Radius R and 2R

question 57

Multiple Choice

Two concentric imaginary spherical surfaces of radius R and 2R respectively surround a positive point charge Q located at the center of the surfaces.When compared to the electric flux Φ₁ through the surface of radius R,the electric flux Φ₂ through the surface of radius 2R is

• A) .
• B) .
• C)Φ₂ = Φ₁.
• D)Φ₂ = 2Φ₁.
• E)Φ₂ = 4Φ₁.