When a current carrying conductor is placed in a magnetic field, the conductor experiences a force which is perpendicular to the direction of the magnetic field Due to this force, the current carrying conductor in displaced from itu rest position. Fleming's left hand ruie is used for finding the direction of displacement. Factors affecting the force are the strength of the magnetic field, the strength of the electric current and the length of the conductor. A boy performed an experiment by suspending perpendicularly a current carrying rod AB in the magnetic field produced by a horse-shoe magnet. He closed the key of the circuit and started noting down the observation.
a)does the rod experience a force when no current was passing through it?
b)which way did the rod get displaced when the current was first switched on?
c) when the number of batteries was increased, what change did he observe in extent of displacement of rod?
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a) no b) towards the magnet c) the force experienced by the conductor increases
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