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Physics
A cube of a metal is given a positive charge Q . For the above system, which of the following statements is true?
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Q. A cube of a metal is given a positive charge $Q .$ For the above system, which of the following statements is true?
Electrostatic Potential and Capacitance
A
Electric potential at the surface of the cube is zero
6%
B
Electric potential within the cube is zero
9%
C
Electric field is normal to the surface of the cube
80%
D
Electric field varies within the cube
4%
Solution:
Electric lines of force are always normal to metallic body.