Electric MotorA device thatconverts/transformselectrical energyinto mechanicalenergy
Electric GeneratorA device thatconverts/transformsmechanical energyinto electricalenergy
ElectromagnetA coil wrappedaround a soft ironcore and that actsas a magnetwhen an electriccurrent runsthrough the coil
Electric FieldThe space aroundan electricallycharged objectaround whichanother chargedobject experienceselectric force
Magnetic FieldThe area arounda magnet wherethe magneticforce can be felt It runs from endto end or from thenorth pole to thesouth pole of themagnet.
Electromagnetic InductionThe process inwhich a magnetpasses through acopper coilcreating anelectrical field– The generation ofelectricity
Lab BreakNow you can partner up and goto any station to begin yourobservationsRemember to answer eacharrow before moving onRemember to read and followall lab directions.
LAB BREAKBegin work on part 2Read and follow each step of the labRemember to write responses as yougo.Complete all of part 2 with your partnerYou have 20 minutes
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Essential LearningsA current-carrying wire issurrounded by anelectromagnetic field.
Essential LearningsAn electromagnet isproduced when currentpasses through a wirecoiled around an iron orsteel rod
Essential LearningsForces of repulsion andattraction cause motionwhen magnetic fieldsinteract.
Essential Learnings Motors transform electricalenergy into mechanicalenergy.
Essential Learnings Inside the motor–Current creates twoopposing electromagnetson the armature (thecopper coil and iron partthat spins)
Essential LearningsInside the motor–The electromagnets on thearmature repel thestationary magnets inposition around thearmature
Essential Learnings Generators transformmechanical energy intoelectrical energy.
Essential Learnings Inside the generator–electromagnetic inductionoccurs as a copper coilpasses through a magneticfield, creating electriccurrent
Essential Learnings Both motors and generatorshave the same basic partsbut their operations arereverse
Essential Learnings Internal components ofmotors and generators– A coil of copper wire wrappedaround a soft iron core(armature)– A set of permanent magnets thatcreate a magnetic field
Essential Learnings The differences betweenthem is the direction of theenergy flow and the energytransformation order
Why “The Big Switch” ?The term “switch” refers to thechangeover from motor togenerator of what is basically thesame device.As the direction of the energytransformation “switches” thedevice’s purpose “switches”
From One to the Other!!!
A Windmill (Wind Turbine)Windmills generators transformmechanical energy to electricalenergy.Done by creating an electric fieldinside the generator (electromagnetinduction) when a copper coil passesthrough a magnetic field