What must be te magnitud eof an isolated positive charge so as to produce an electric potential of `3xx10^(5)V` at a distance of 3 m from it?

Two infinitely long parallel wires having linear charge density 3 xx 10^(-9) C/m and 4 xx 10^(-9) C/m are kept at a distance of 20 cm in air. What will be the magnitude and direction of the electric field intensity at a point that is at a distance of 10 cm from each wire?

Potential at a point due to a positive charge of 10 muC at a distance of 9 m is

Two positive charges of magnitude 4 C and 6 C are placed 10 cm apart . The electric potential at a distance of 10 cm from the middle point on the right bisector of the line,joining the two charges is

At a certain distance from a point charge, the electric field is 500 V/m and the potential is 3000 V. What is the distance ?

A point charge q produces an electric field of magnitude 2NC^(-1) at a point distance 0.25 m from it. What is the value of charge ?

Define electric potential. What is the SI unit of potential? Obtain an expression for electric potential at a distance r from isolated unit positive charge.

At a certain distance from a point charge the electric potential is 200V and electric field is 200 V/m. What is this distance?