Current
Charge
Circuits
Magnetism
Random
100
The force or push that causes electric charges to move is called what?
Current
100
What are the two charges for particles?
Positive+ and Negative-
100
A circuit that allows electrons to move freely is called what type of circuit?
Closed circuit
100
A material that gives off an external magnetic field, making it possible to apply a force over a distance is called what?
Magnet
100
This device contains a piece of metal that melts it it gets too hot in order to open a circuit.
Fuse
200
What is the current produced by a 9-volt battery flowing through a resistance of .2 ohms?
18 amps
200
Electrical charges always flow from what to what?
Positive to negative
200
A circuit that does not allow electrons to move freely is called what type of circuit?
open circuit
200
All magnets, no matter, the size or shape, have 2 what?
Magnetic poles.
200
This device contains an internal lock that will open the circuit if it gets too hot.
Circuit breaker
300
What is the unit of measure for current?
Amps or Amperes
300
A material through which electrons do not flow freely is what?
Insulator
300
What is the symbol for battery?
300
What would happen to a magnet if it is broken in half?
It becomes a complete magnet with a new north/south pole
300
what can you add to the coils of an electromagnet to increase the strength?
more coils
400
What is the current of a circuit with a 6 volt battery and a resistance of 10 ohms?
.6 amps
400
A material that allows electrons to flow freely is what?
Conductor
400
This is the symbol for what?
Lightbulb
400
Magnetic forces always travel from which pole to which pole?
North pole to south pole.
400
What type of device converts mechanical energy into electricity?
Electric generator.
500
What is the symbol for ohms
500
Silver has a resistance of .0198 ohms. What voltage would produce current of 100 amps?
1.98 Volts
500
A circuit with a current of 25 amps and a resistance of 16 ohms has what voltage?
400 volts.
500
If you were to put 2 north poles together, what happens to the magnets?
They repel.
500
This device converts electric energy into mechanical energy.
Electric motor.