11741362
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace casi 7 años
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Pregunta 1
Pregunta
In a simple series circuit, why does the bulb light when you close the switch?
Respuesta
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Because the switch produces electricity .
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Because closing the switch completes the circuit.
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Because closing the switch breaks the circuit.
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Because voltage flows through the circuit.
Pregunta 2
Pregunta
A simple series circuit consists of one 1.5V battery, wires and one bulb.
When the1.5V battery is replaced with a 3V battery:
Respuesta
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the bulb glows brighter.
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the bulb glows with the same level of brightness.
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the bulb glows dimmer
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the bulb "blows" and the circuit will no longer work.
Pregunta 3
Pregunta
A material that lets electricity pass through it is called:
Respuesta
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an electrical conductor
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an electrical inductor
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an electrical insulator
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an electrical appliance
Pregunta 4
Pregunta
Which of the following materials is NOT an electrical conductor?
Respuesta
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gold
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copper
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carbon
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phosphorus
Pregunta 5
Pregunta
Which of the following materials is an electrical insulator?
Respuesta
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lead
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brass
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rubber
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aluminium
Pregunta 6
Pregunta
In which circuit will the bulb or bulbs glow brightest?
Respuesta
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A simple series circuit with one bulb and one battery
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A simple circuit with one bulb and two batteries.
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A simple series circuit with two bulbs and one battery
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A simple circuit with one battery and two bulbs in parallel.
Pregunta 7
Pregunta
Why is a bulb brighter when it is powered by two batteries in series rather than by just one battery?
Respuesta
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Because the flow of electric current in the circuit is less.
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Because the flow of electric current in the circuit is greater.
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Because the flow of voltage in the circuit is greater.
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Because the total voltage across the circuit is less.
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