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  • Can someone help me with this, A cube of a metal is given a positive charge Q. For the above system, which of the following statements is true

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

  • Option 1)

    Electric potential at the surface of the cube is zero

  • Option 2)

    Electric potential within the cube is zero

  • Option 3)

    Electric field is normal to the surface of the cube

  • Option 4)

    Electric field varies within the cube

 

Answers (1)

As we learned

 

Potential of a System of Charge -

V=\frac{kq_{1}}{r_{1}}+k\frac{q_{2}}{r_{2}}+\frac{k\left ( -q_{3} \right )}{r_{3}}+\cdots

- wherein

 

 Electric lines of force are always normal to metallic body

 


Option 1)

Electric potential at the surface of the cube is zero

Option 2)

Electric potential within the cube is zero

Option 3)

Electric field is normal to the surface of the cube

Option 4)

Electric field varies within the cube

Posted by

Vakul

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