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Question
What should be the characteristic of fuse wire?
What should be the characteristic of fuse wire?
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Solution
The correct option is D Low melting point, high specific resistance
Fuse Wire
- In electric circuits, fuse wire is used to protect home appliances from being damaged by large amounts of current.
- The circuit will become an open circuit once a fuse wire is operated, and we will select the fuse wire's characteristics based on these considerations.
- Until the current across the circuit is within the limit, the fuse wire functions as a normal wire in the circuit.
- The wire begins to heat as the current in the circuit rises above its typical value and crosses the limit for which it was built. And the wire must melt in order to break the circuit or protect the device.
- This is only conceivable if the wire's melting point is low. If the wire's melting point is high, it will take a long time to melt, causing the circuit to be damaged.
- When a strong current travels across the circuit, the fuse wire should melt promptly. That means a fuse wire with a low melting point and a high specific resistance should be used.
- If the wire's melting point and resistance are high, it will take a long time to melt, causing the circuit to be damaged.
Hence, option D is the correct answer.
Low melting point, high specific resistance
Fuse Wire
- In electric circuits, fuse wire is used to protect home appliances from being damaged by large amounts of current.
- The circuit will become an open circuit once a fuse wire is operated, and we will select the fuse wire's characteristics based on these considerations.
- Until the current across the circuit is within the limit, the fuse wire functions as a normal wire in the circuit.
- The wire begins to heat as the current in the circuit rises above its typical value and crosses the limit for which it was built. And the wire must melt in order to break the circuit or protect the device.
- This is only conceivable if the wire's melting point is low. If the wire's melting point is high, it will take a long time to melt, causing the circuit to be damaged.
- When a strong current travels across the circuit, the fuse wire should melt promptly. That means a fuse wire with a low melting point and a high specific resistance should be used.
- If the wire's melting point and resistance are high, it will take a long time to melt, causing the circuit to be damaged.
Hence, option D is the correct answer.
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