1.

The electrostatic force between two charges Q_1 and Q_2 at separation r is given by F = (K.Q_1Q_2)/(r^2). Theconstant K

Answer»

DEPENDS on the SYSTEM of UNITS only 
depends on the medium between the charges only 
depends on both the medium between the charges and the system of units 
is independent of both the system of units and the medium between the charges 

ANSWER :C


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