Careful measurement of the electric field at the surface of a black box indicates that the net o...

Question From - NCERT Physics Class 12 Chapter 01 Question – 017 ELECTRIC CHARGES AND FIELDS CBSE, RBSE, UP, MP, BIHAR BOARD

QUESTION TEXT:-
Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is `8.0xx10^(3) Nm^(2)//C` (a) what is the net charge inside the box ? (b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box ? Why or why not?

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