Grade 7 Exam > Grade 7 Questions > Which device is commonly used to prevent elec... Start Learning for Free
Which device is commonly used to prevent electrical circuits from overheating and causing fires?
- a)Electric fan
- b)Electric bulb
- c)Electric fuse
- d)Electric heater
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which device is commonly used to prevent electrical circuits from over...
- An electric fuse is a safety device used to prevent electrical circuits from overheating and causing fires. It acts like a barrier that breaks the circuit if the current exceeds a safe limit, protecting the wires and devices. It's like a superhero that keeps our electrical devices safe from getting too hot and causing harm.
Most Upvoted Answer
Which device is commonly used to prevent electrical circuits from over...
Understanding the Role of an Electric Fuse
An electric fuse is a crucial safety device used in electrical circuits to prevent overheating and potential fires. Here's how it works and why it's essential:
Function of an Electric Fuse
- Overcurrent Protection: The primary function of a fuse is to protect electrical circuits from excessive current flow. When the current exceeds a certain limit, the fuse "blows" or melts.
- Circuit Interruption: By melting, the fuse breaks the circuit, stopping the flow of electricity. This helps prevent overheating of wires and components, reducing the risk of fires.
Composition and Design
- Material Choice: Fuses are typically made from materials that melt easily, such as metal. This ensures they react quickly to overload conditions.
- Rated Capacity: Fuses come in different ratings, designed for specific circuits. Using the correct fuse size is essential for effective protection.
Why Not Other Devices?
- Electric Fan: While it cools areas, it does not protect electrical circuits from overheating.
- Electric Bulb: Primarily used for lighting; it does not have protective properties against overloads.
- Electric Heater: Designed to generate heat, it can actually contribute to overheating if not properly controlled.
Conclusion
In summary, an electric fuse is a vital component in safeguarding electrical circuits from damage due to overheating. By interrupting the circuit during overload conditions, fuses play an essential role in fire prevention and electrical safety. Always ensure that the correct type of fuse is used in any electrical system for optimal protection.
An electric fuse is a crucial safety device used in electrical circuits to prevent overheating and potential fires. Here's how it works and why it's essential:
Function of an Electric Fuse
- Overcurrent Protection: The primary function of a fuse is to protect electrical circuits from excessive current flow. When the current exceeds a certain limit, the fuse "blows" or melts.
- Circuit Interruption: By melting, the fuse breaks the circuit, stopping the flow of electricity. This helps prevent overheating of wires and components, reducing the risk of fires.
Composition and Design
- Material Choice: Fuses are typically made from materials that melt easily, such as metal. This ensures they react quickly to overload conditions.
- Rated Capacity: Fuses come in different ratings, designed for specific circuits. Using the correct fuse size is essential for effective protection.
Why Not Other Devices?
- Electric Fan: While it cools areas, it does not protect electrical circuits from overheating.
- Electric Bulb: Primarily used for lighting; it does not have protective properties against overloads.
- Electric Heater: Designed to generate heat, it can actually contribute to overheating if not properly controlled.
Conclusion
In summary, an electric fuse is a vital component in safeguarding electrical circuits from damage due to overheating. By interrupting the circuit during overload conditions, fuses play an essential role in fire prevention and electrical safety. Always ensure that the correct type of fuse is used in any electrical system for optimal protection.
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Question Description
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Which device is commonly used to prevent electrical circuits from overheating and causing fires?a)Electric fanb)Electric bulbc)Electric fused)Electric heaterCorrect answer is option 'C'. Can you explain this answer? for Grade 7 2026 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about Which device is commonly used to prevent electrical circuits from overheating and causing fires?a)Electric fanb)Electric bulbc)Electric fused)Electric heaterCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Grade 7 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which device is commonly used to prevent electrical circuits from overheating and causing fires?a)Electric fanb)Electric bulbc)Electric fused)Electric heaterCorrect answer is option 'C'. Can you explain this answer?.
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