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Question

(a) A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.

(b) State two ways to increase the force on a current-carrying conductor in a magnetic field.

(c) Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.

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Solution

(a) Fleming’s left-hand rule

(b) The force on a current-carrying conductor in a magnetic field can be increased by increasing the current flowing through the conductor or by increasing the strength of the magnetic field.

(c) Electric motor


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