9928038
Descripción
Test por Tracy Rains, actualizado hace más de 1 año
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Creado por Tracy Rains
hace casi 7 años
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Pregunta 1
Pregunta
What is an electromagnet?
Respuesta
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A magnet created by the flow of electricity through metal.
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A magnet made out of long wires
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An electrical circuit that is built with a magnet as the conductor.
Pregunta 2
Pregunta
An electromagnet can be switched on and off.
Respuesta
- True
- False
Pregunta 3
Pregunta
[blank_start]Solenoids[blank_end] are powerful electromagnets made from wire being wrapped around a nail and connected to a battery.
Respuesta
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Solenoids
Pregunta 4
Pregunta
What three things is an electromagnet made with?
Respuesta
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Magnet, light bulb, wire
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Magnet, wire, switch
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Wire, nail, battery
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Wire, battery, light bulb
Pregunta 5
Pregunta
Electromagnets can be found in doorbells.
Respuesta
- True
- False
Pregunta 6
Pregunta
The difference between a magnet and an electromagnet is that you can increase or decrease the power of the electromagnet by [blank_start]controlling[blank_end] the [blank_start]supply[blank_end] of electricity.
Respuesta
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controlling
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supply
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