Question

A cube of a metal is given a positive charge $Q.$ For the above system, which of the following statements is true?

• A. Electric potential at the surface of the cube is zero
• B. Electric potential within the cube is zero
• C. Electric field is normal to the surface of the cube
• D. Electric field varies within the cube

Answer 1

Answer: (C)

Electric lines of force are always normal to metallic body.