Question

What is electric field? Write expression for the electric field in vector form due to (i) a Point charge and (ii) a number of charges.​

Answer 1

Answer:

$Electric Intensity due to a point charge:-</p><p></p><p>F=Eq0 [force experienced by the charge q0]</p><p></p><p>F=r2kqq0 [according to collomb's law]</p><p></p><p>r= distance between the q and q0 source charge</p><p></p><p>we know, E=q0F</p><p></p><p>E=q01×r2kqq0</p><p></p><p>E=r2kq we know k=4π∈01</p><p></p><p>Final Expression →E=4π∈01×r2q</p><p></p><p>∈0= dielectric constant of letan k space </p><p></p><p>q= point charge</p><p></p><p> r=distance between two point charge </p><p></p><p>If there is a medium of dielectric constant ∈r then,</p><p></p><p>E=4π∈0∈r1.r2q</p><p></p><p>Vector from → E=4π∈0∈r1.r2q.r</p><p></p><p></p><p>$