Question

Dimensional formula of electric field

Answer 1

We know that electrostatic force = kq1q2/r²

And electric field= kq1/r²

So we can say field= force/charge

Now force = mass * accn

Accn = metre / time²

So dimensions of force = M¹L¹T^-2

Charge = I(current) * time

So dimensions of charge= A¹T¹

From this dimensions of field comes to be = M¹L¹T^-2/A¹T¹ =

= M¹L¹T^-3 A^-1

Hope this helps