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Physicss Physics A Level Physics Home Revision hut Electric motor effect When a current flows through a conductor in a magnetic field it experiences a force acting on it. The direction of the force depends on the direction of the magnetic field and the direction of the current. The LEFT HAND RULE shows the directions. Magnetic field direction
Current direction
Force direction (motion) F C M First finger I E L D SeCond finger U R R E N T ThuMb O T I O N When the current is turned on going into the page The direction of the force (motion) is DOWN When the current is turned on coming out of the page The direction of the force (motion) is UP
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Current going into page Current coming out of page