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HSC Physics | Motors and Generators

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Quiz by asensio10
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Last updated: October 28, 2017
First submittedOctober 28, 2017
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Hint
Answer
Magnitude of Force in current carrying conductor equation
F=BILsinĪ˜
The turning force from a distance of a pivot
Torque
Effect when a current carrying conductor experiences a force in a magnetic field
Motor Effect
Torque when a current carrying loop is perpendicular to magnetic field
0
Type of Commutator in DC motor and generator
Split Ring
Equation for Torque of current carrying loop in magnetic field
T=nBIAcosĪ˜
Discovered Electromagnetic Induction
Michael Faraday
Number of Field lines passing through an area
Magnetic Flux
"If an induced current flows that it's direction is such to oppose the change in flux that produced it"
Lenz's Law
Hint
Answer
Opposed the supply EMF in an electric motor due to above
Back EMF
Circular Loops of Current in a solid conductor
Eddy Currents
Type of Commutator in AC motors and generators
Slip Ring
Fought for DC Generators in Commercial use
Thomas Edison
Won this battle with the AC alternative
George Westinghouse
Occurs due to resistance in power transmission wires
Line Loss
Instrument able to manipulate size of voltage and current in AC
Transformer
Type of AC motor usually found in a washing machine
Induction
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