(a) Derie an expression for the force between two long parallel current carryng condcutors. (b) Use this expression to define SI unit of current. (c ) A long straight wire AB carries a current I. A proton P travels with a speed v, parallel to the wire, at a distance d from it in a direction opposite to the current as shown in the fig. What is the force experienced by the proton and what is its direction?

Name and define the SI unit of current.

(a) Derive the expression for the force acting per unit length between two long straight parallel current carrying conductors. Hence, define one ampere. (b) Two long parallel straight conductors are placed 12 cm apart in air. They carry equal currents of 3 A each. Find the magnitude and direction of the magnetic field at a point midway between them (drawing a figure) when the currents in them flow in opposite directions.

Derive and expression for the force per unit length acting on the two straight parallel current carrying conductors.In which condition will this force be attractive and repulsive?Define the standard unit of current. OR An electron is revolving with speed v in a circular orbit of radius r .Obtain the expession of gyromagnetic ratio.What is a Bohr magneton?Write its value.

Force Between Parallel Current Carrying Wire

The force between two parallel wires carrying currents has been used to define

The force between two parallel wires carrying currents has been used to define