Force on current-c
The force on a current carrying wire is similar to that of a moving charge as expected since a charge carrying wire is a collection of moving charges. A current carrying wire feels a force in the presence of a magnetic field. The Lorentz force on a macroscopic current is often referred to as the Laplace force. Consider a conductor of length l, cross section A, and charge q which is due to electric current i. If this conductor is placed in a magnetic field of induction B which makes an angle θ (theta) with the velocity of charges in the conductor, the force exerted on a single charge q is
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so, for N charges where
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the force exerted on the conductor is
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where 
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