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