07 the motor principle and left hand rules
07 the motor principle and left hand rules
07 the motor principle and left hand rules
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<strong>07</strong> <strong>the</strong> <strong>motor</strong> <strong>principle</strong> <strong>and</strong> <strong>left</strong> h<strong>and</strong> <strong>rules</strong>November 26, 2012The Motor Principle Broken downMoving charges make ______________________________________(Oersted)Moving or changing magnetic fields create a _______________(Faraday)Opposite poles ____________ <strong>and</strong> like poles ______________Looping a wire allows <strong>the</strong> magnetic field to be _____________Factors which affect <strong>the</strong> strength of <strong>the</strong> magnetic field are1. 2.3. 4.Motor Principle is a result of Oersted determine <strong>the</strong> direction of force for each case.S N S N S N N S1. 2.3. S N 4.A new ________rule was developedfor cases 5 <strong>and</strong> 6 <strong>the</strong> force is out ofyour palm5. 6.ANDMoving or changing magnetic fields create a _______________(Faraday)2
<strong>07</strong> <strong>the</strong> <strong>motor</strong> <strong>principle</strong> <strong>and</strong> <strong>left</strong> h<strong>and</strong> <strong>rules</strong>November 26, 2012Worksheet Direction of fields <strong>and</strong> current flow using <strong>the</strong> ________ h<strong>and</strong> rule1.Determine <strong>the</strong> direction of <strong>the</strong> magnetic field for each of <strong>the</strong> following 4 wires.2. Determine <strong>the</strong> orientation of <strong>the</strong> magnetic field for each of <strong>the</strong> following 3 coils.3. Determine <strong>the</strong> direction of <strong>the</strong> force on <strong>the</strong> wire for <strong>the</strong> following 3 cases.4. Determine <strong>the</strong> direction of rotation for each of <strong>the</strong> following DC <strong>motor</strong>s.5. Determine <strong>the</strong> direction of <strong>the</strong> induced current using Lenz’s law for <strong>the</strong>following 4 cases4
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