[M^{-1}L^{-3}T^{2}Q^{2}] or in terms of current, [M^{-1}L^{-3}T^{4}I^{2}] where I represents current.

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as u know that F=kq^2/r^2 and k=1/4*pie*epsilon not so by puting value of K we get F=1*Q^2/4*pie *epsilon *R^2

f=force and dimention of force is[ MLT^-1] b'coz f=ma m=M dimention and a=L/T. Q=charge Q=AT

[MLT^-1=A^2 T^2/L^2*epsilon not]here we kow that there is no dimention for pie =22/7

so by cross multiplying we get a[ A^2 T^4 M^-1 L^-3]

f=force and dimention of force is[ MLT^-1] b'coz f=ma m=M dimention and a=L/T. Q=charge Q=AT

[MLT^-1=A^2 T^2/L^2*epsilon not]here we kow that there is no dimention for pie =22/7

so by cross multiplying we get a[ A^2 T^4 M^-1 L^-3]

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