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Science L7 Generators and Motors
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AC , is it current that can change direction or stay in one direction?
Change direction
Does DC flow in one direction or both directions?
One direction
What natural sources can be used for mechanical energy?
Falling water, turbines in wind, high pressure steam
To increase the size of an induced current we can ___________. Increase the number of coils? True or false
True
A generator converts _______ energy into _____ energy. Mechanical to electrical OR chemical to electrical
Mechanical to electircal
If a wire moves parallel to a magnetic field, will it produce a current? Yes or No
No
What is a DC produced by? Batteries OR generators
Batteries
What do DC and AC stand for?
Direct and alternating current
An electric motor converts ________ energy to __________ energy. Electrical to mechanical OR thermal to mechanical
Electrical to mechanical
What is the advantage of an electromagnet?
Switch on and off
What results from movement, magnetism and electric current?
Electromagnet field formed
How can you increase the size of the force acting on a wire? Increase the size of the current OR the width of the wire
Current increased
What is the name of the rule that helps tell the direction of force acting on a wire?
Flemings left hand rule
What is current?
Flow of electrons
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