A long straight conductor kept in air carries a current of 8 A. At what distance from this conductor is the magnetic field intensity equal to `2 xx 10^-5 (Wb)/m^2` ?

A very long straight wire carries a current 5.2A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire?

A long straight wire carries a current of 35 A. What is the magnitude of the field (B) at a point 20 cm from the wire?

A long straight wire carrying current of 30 A is placed in an external unifrom magnetic field of induction 4xx10^(-4) T . The magnetic field is acting parallel to the direction of current. The magnitude of the resultant magnetic inuduction in tesla at a point 2.0 cm away form the wire is

A straight wire of length 0.5 m carrying a current of 1.6 ampere is placed in a uniform magnetic field of induction 2 T. If the magnetic field is perendicular to the length of the wire, then force on the wire is

A very long straight wire carries a current of 5A. The magnetic induction at 0.1m from the wire is 1 xx 10^-5 wb//m^2 . What will be the magnetic induction at 0.5m from the wire of the current through the wire is increased to 20A?

A long straight conductor AB, carrying a current of 25 A is fixed horizontally. Another long conductor XY is kept parallel to AB at a distance of 4mm, in air. Conductor XY is free to move and carries current 1. Then the magnitude and direction of current I forwhich the magnetic repulsion just balances the weight of conductor XY is (Mass per unit length for conductor XY is 5 xx 10^(-2) Kg//m) .

Give force acting on a current carrying conductor placed in a uniform magnetic field.

Derive an expression for force acting on current carrying conductor in uniform magnetic field

A conductor of length lm and carrying current of 1A is placed at an angle of 45^@ to the magnetic field of 1G. The force acting on the conductor is