Two wires carrying equal currents i each, are placed
perpendicular to each other, just avoiding a contact. If
one wire is held fixed and the other is free to move under
magnetic forces, what kind of motion wil results?

A 3.0 cm wire carrying a current of 10 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27 T. What is the magnetic force on the wire?

A 1.0 cm wire carrying a current of 30 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27 T. What is the magnetic force on the wire ?

Consider a wire carrying a steady current, I placed in a uniform magnetic field vecB perpendicular to its length. Consider the charges inside the wire. It is known that magnetic forces do no work. This implies that,

Two identical coils having same number of turns and carrying equal current have common centre and their planes are at right angles to each other. What is the ratio of magnitude of the resultant magnetic field at the centre and magnetic field due to one of the coils at the centre ?

A wire carrying a current i is placed in a uniform magnetic field in the form of the curve y=asin((pix)/L),0lexle2L . The force acting on the wire is

When electric current I flow through a straight wire of length I placed in a magnetic field , a magnetic force of 1N acts on it . If magneitude of the electric current is halved and the magnetic field is doubled , what will be the magnetic force acting on the wire ?

A very long wire is held vertical in a direction perpendicular to the horizontal component of Earth's magnetic field. Find the value of current to be passed through this wire so that this resultant magnetic field at a point 10 cm away from this wire becomes zero. What will be the magnetic induction at a point 10 cm away from the wire on the opposite side of this point ? Horizontal component of Earth's magnetic field H=0.36xx10^(-4)T,mu_(0)=4pixx10^(-7)Tm//A .

A charge Q is place at each of the opposite corners of a square. A charge q is placed at each of the other two corners. If the net electrical force on q is zero, then q//Q equals:

Two small and similar bar magnets have magnetic dipole moment of 1.0 Am^(2) each. They are kept in a plane in such a way that their axes are perpendicular to each other. A line drawn through the axis of one magnet passes through the centre of other magnet. If the distance between their centers is 2 m, find the magnetic field at the mid point of the line joining their centers.