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Questions and Answers
Light, heat, chemical and magnetic changes are all produced by:
Most of the electricity you use daily consists of a flow of tiny, negatively charged particles called:
The movement of electricity along a path called a conductor is a(n):
Materials that best transport electricity are called:
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Which of the following materials does NOT allow a current to pass through it?
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An ampere is a unit of electric:
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A volt is a unit of electric:
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A measure of how much electrical energy is being used is known as a:
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A current in which electrons move at an even rate and flow in only one direction is called:
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When a blow dryer is on and air begins to flow, you have an example of a(n):
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When too many appliances are put on one circuit and operated all at the same time, this is known as:
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Fires in electrical circuits can occur if:
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Dropping an electrical appliance into water, making it a foreign conductor, causes a(n):
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Which of the following devices breaks the flow of current when an overload occurs?
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Which of the following should NOT be done if a fire results from an overload of an electric circuit?
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Study Notes
Electricity Basics
- Light, heat, chemical and magnetic changes are produced by electricity.
- Electricity consists of a flow of negatively charged particles known as electrons.
Current and Conductors
- Electric current refers to the movement of electricity along a conductor.
- Conductors are materials that effectively transport electricity.
- Insulators do not allow current to pass through, such as alcohol.
Units of Measurement
- An ampere measures electric strength.
- A volt measures electric pressure.
- A watt measures electrical energy consumption.
Types of Current
- Direct current (DC) has electrons moving at a constant rate in one direction.
- A closed circuit permits the flow of electricity, whereas an open circuit does not.
Circuit Safety
- Overloading occurs when too many appliances are on a single circuit, leading to excess current flow.
- Electrical fires can happen due to an overloaded circuit and multiple appliances sharing the same socket.
- Dropping an appliance in water causes a short circuit by creating a foreign conductor.
Circuit Breakers
- A circuit breaker interrupts the flow of current during overload situations, enhancing safety.
- It's crucial to avoid using water to extinguish electrical fires; instead, use a fire extinguisher or smother it.
Additional Safety Considerations
- Opening a circuit intentionally can prevent appliance damage, but it shouldn't be done during a fire caused by overload.
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Description
Test your knowledge of basic electricity concepts with this flashcard quiz. Each card presents a question related to electrical principles, including the flow of electrons and the nature of conductors. Review and reinforce your understanding of how electricity works in everyday life.
