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16 Cards in this Set
- Front
- Back
In a simple series circuit, why does the bulb light when you close the switch? |
Because closing the switch completes the circuit. |
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In a simple series circuit, why does the bulb go out when you open the switch? |
Because opening the switch breaks the circuit. |
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Imagine a simple series circuit with one 1.5V battery and one bulb. When the 1.5V battery is replaced with a 3V battery, what happens to the bulb? |
The bulb glows brighter. |
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Imagine a circuit with a 1.5V battery and one bulb. Imagine a similar circuit with a 3V battery and two bulbs. Which has the brightest bulb(s)? |
The bulbs in both circuits are of similar brightness levels. |
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Why might a bulb flash and go out when a 1.5V battery and a 3V battery are both connected across it in a simple series circuit? |
Too much electricity flows through the bulb's filament and the bulb blows. |
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What is the effect of changing the wire in a circuit from a straight thick wire to a straight thin wire? |
The bulbs become dimmer. |
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What is the effect of changing the wire in a circuit from a straight thick wire to a longer (coiled) thick wire? |
The bulbs become dimmer. (Because long wire provides more resistance than short wire) |
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In a circuit diagram, what does a circle with a cross inside it represent? |
A lightbulb. |
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What do the long straight lines represent in a circuit diagram? |
Wires. |
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How is a battery represented in a circuit diagram? |
A long line and a short line. (The long line represents the positive terminal of the battery; the short line, the negative terminal.) |
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What is the definition of electricity? |
a form of energy that is carried through wires and is used to operate machines, lights, etc.: electric current or power (Merriam-Websters). |
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What is the definition of static electricity? |
Static electricity is an imbalance of electric charges within or on the surface of a material. The charge remains until it is able to move away by means of an electric current or electrical discharge. |
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A(n) _________ is used to measure current, which is measured in amps. |
ammeter |
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The rubbing together of two or more objects to create a static charge is called: |
friction |
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Name a common material from which electrical wires are manufactured. |
copper |
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Explain the charges of electrons, protons and neutrons. |
Electrons contain a negative charge, protons a positive charge. Neutrons are neutral – they have neither a positive nor a negative charge. |