Question

how does the force on a current carrying conductor depend upon the length of the conductor?

Answer 1

The magnetic field produced by a straight current carrying conductor depends upon the following factors:

i) Current in the conductor: If the current in the conductor is increased, the deflection of the compass needle increases.

This shows that, the magnitude of the magnetic field produced at a given point is directly proportional to the current passing through the wire.

ii) Distance from the wire: When a certain amount of current is passed and, if the wire is moved away from the compass needle, deflection decreases.

This shows that the magnitude of the magnetic field produced by a given current in the wire is inversely proportional to the distance from the wire.

Answer 2

We know by the formula of force acting on current carrying conductor placed in uniform magnetic field is that:

F=l*B*L sin theta

So, clearly force on current carrying conductor depends upon:

¤ Intensity of current carried by conductor.

¤ strength of magnetic field in which the conductor is placed.

¤ Length of the conductorplaced in magnetic field.

¤ Theta is the angle between current and magnetic field.

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