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Questions and Answers
What is the primary function of a switch in an electrical circuit?
What is the primary function of a switch in an electrical circuit?
- To control the flow of electricity by opening and closing the circuit (correct)
- To increase the voltage of the circuit
- To reduce the electrical resistance in the circuit
- To store electrical energy for later use
Which of the following best describes an 'open circuit'?
Which of the following best describes an 'open circuit'?
- A path where electrons move slowly, causing devices to work weakly.
- A path where electricity flows freely with minimal resistance.
- A broken path where electricity cannot flow, preventing devices from working. (correct)
- A circuit that only supports direct current, not alternating current.
Which material is most suitable as a conductor in an electrical circuit?
Which material is most suitable as a conductor in an electrical circuit?
- Copper (correct)
- Plastic
- Rubber
- Wood
What is the role of a battery in an electrical device?
What is the role of a battery in an electrical device?
If a circuit is 'closed', what will happen?
If a circuit is 'closed', what will happen?
Which of the following is the most important safety precaution when dealing with electricity?
Which of the following is the most important safety precaution when dealing with electricity?
What is the definition of 'electricity' in the context of this text?
What is the definition of 'electricity' in the context of this text?
Which of these is a good example of an insulator?
Which of these is a good example of an insulator?
Flashcards
Electricity
Electricity
The flow of electric charge that powers devices.
Electric Circuit
Electric Circuit
A closed path through which electricity flows.
Battery (Cell)
Battery (Cell)
A source of electricity with positive and negative terminals.
Conductors
Conductors
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Insulators
Insulators
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Switch
Switch
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Closed Circuit
Closed Circuit
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Safety Precautions
Safety Precautions
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Study Notes
Electricity
- Electricity is the flow of electric current, powering various devices.
- It's similar to water flowing in a pipe.
Electric Circuits
- A circuit is a closed path allowing electricity to flow.
- A complete circuit allows electricity to flow to operate devices.
- A broken circuit stops electricity flow.
Batteries
- Batteries are energy sources for electrical devices.
- Batteries have positive (+) and negative (-) terminals.
- Connecting the terminals allows electricity flow.
Conductors and Insulators
- Conductors allow electricity to pass through (e.g., copper, iron).
- Insulators block electricity (e.g., plastic, rubber).
Switches
- Switches control electricity flow by opening or closing the circuit.
- Closing a switch allows electricity to flow.
- Opening a switch stops electricity flow.
Types of Circuits
- Closed Circuit: Electricity flows, devices work.
- Open Circuit: Electricity stops, devices don't operate.
Uses of Electricity
- Electricity powers appliances, lighting, and machines.
- It is used for charging devices.
Safety Precautions
- Avoid touching electrical wires with wet hands.
- Don't use damaged electrical wires.
- Keep electrical equipment away from water.
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