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Question 17: NCERT Class 12th Physics: Chapter 1 – Electric Charges And Fields
Careful measurement of the electric field at the surface of a black box indicates that the net outward flux though the surface of the box is 8.0 × 103 N m2 C-1.
(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?
Solution:
So, the net charge enclosed by that closed surface is zero, although it may have some charges inside it.
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 1-Electric Charges And Fields