1.

Shaliniand his brotherAmeyobserveda water-pump working, Shaliniinquired howan electric motorworks . Amey collected differentpartsof an electricmotore.g.,field - magnets , cabon- brushes ,armature, battery, switch, connecting wire , split- rings , etc, and showedthem to Shalini . Ameythen explainedhow an armature could rotate.Statethe principlehowan electricmotor to works .

Answer»

SOLUTION :WHENA current -carryingcoil is placedin a MAGNETICFIELD,it experiences a FORCE .
THEDIRECTION of thisforceis foundbyusingthe Fleming.s left - handrule .


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