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Questions and Answers
What is resistance?
What is resistance?
Resistance is the opposition to the flow of electric current.
Describe the working of a dry cell.
Describe the working of a dry cell.
A dry cell works by converting chemical energy into electrical energy through a chemical reaction.
Describe direct and alternating currents.
Describe direct and alternating currents.
Direct current (DC) flows in one direction continuously, while alternating current (AC) changes direction periodically.
What are conductors and insulators of electricity?
What are conductors and insulators of electricity?
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What are the precautions for using electricity safely?
What are the precautions for using electricity safely?
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Study Notes
Pronouns
- Interrogative pronouns are used to ask questions, such as "who", "what", and "whom"
- Examples of interrogative pronouns in sentences: "Who helped the blind man?", "Whom did CAV help?"
Electricity
- Resistance: opposition to the flow of electric current
- Unit of resistance: ohm (Ω)
Dry Cell
- A dry cell is a type of electric battery that uses a paste instead of a liquid electrolyte
- Working: a chemical reaction between the zinc anode and the manganese dioxide cathode produces electricity
Currents
- Direct Current (DC): flows in one direction only, used in electronic devices
- Alternating Current (AC): flows in one direction, then reverses direction, used in power distribution
Conductors and Insulators
- Conductors: materials that allow electricity to flow through them, such as copper, aluminum, and gold
- Insulators: materials that do not allow electricity to flow through them, such as rubber, plastic, and glass
Electricity Safety
- Precautions for using electricity safely:
- Avoid overloading outlets and extension cords
- Keep electrical appliances away from water
- Avoid touching electrical wires or outlets with bare hands
- Use protective gear when working with electricity
- Follow manufacturer's instructions for electrical appliances
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Description
Test your knowledge of interrogative pronouns, resistance, electric circuits, conductors, and insulators with this quiz. Questions cover grammar concepts as well as physics topics like resistance, electric currents, conductors, and electrical safety precautions.
