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The force on current carrying conductor kept in a magnetic field is given by the expression F = B I L sin@

So the force becomes zero when the current carrying conductor is kept parallel to the magnetic field direction and becomes maximum when the current direction is normal to the magnetic field direction.

Ok now why does a force exist on the current carrying conductor?

As current flows through a conductor magnetic lines are formed aroung the conductor. This magnetic field gets interaction with the external field and so a force comes into the scene.

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12y ago

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