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प्रश्न
Explain the importance/uses of fuse wire.
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उत्तर
- Fuse is an important application of heating effect of electric current used in electric circuits.
- It protects circuits and appliances by stopping the flow of any excess electric current.
- If a current larger than the specific value flows through the circuit, the temperature of fuse wire increases. This melts the fuse wire and breaks the circuit.
- In summer season, when consumption of electrical power is huge in the evening due to home lighting, fan, air conditioner, use of electricity in shops etc, an excessive current is drawn from the transformer. If the capacity of the transformer is insufficient, its fuse wire melts, and the supply gets shut down.
संबंधित प्रश्न
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(a) How much charge flows around the circuit each second?
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diameter?
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(a) magnitude of resistance of the resistor
(b) temperature of the resistor
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(a) chemical effect of current
(b) magnetic effect of current
(c) lighting effect of current
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(a) thin and short
(b) thick and short
(c) low melting point
(d) higher resistance than rest of wiring
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| P | `6.84xx10^8`Ωm |
| Q | `1.70xx10^8`Ωm |
| R | ` 1.0xx10^15`Ωm |
| s | `11.0xx10^-7`Ωm |
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Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.
Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.
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True or False – If False give the correct answer
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The heating element of an electric iron is made up of:
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Choose the combination of correct answer from the following.
Your teacher has shown you the following activity.
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Write down any three questions that come to your mind about this activity.
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What is the heating effect of electric current?
State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
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