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Grade: 11

                        

A charge Q is divided into two parts. The two charges kept at a distance apart have a maximum coulombian repulsion. Then the ratio of Q and one of the parts is given by (a) 1 : 2 (b) 2 : 1 (c) 1 : 4 (d) 4 : 1

8 years ago

Answers : (1)

Anirban Mukherjee
47 Points
							

F=q(Q-q)/x^2

dF/dq =0

Q-2q=0

q=Q/2

8 years ago
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