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The most important safety method used for protecting home appliances from short-circuiting or overloading is

The most important safety method used for protecting home appliances from short-circuiting or overloading is Correct Answer use of fuse

Concept:

Heating Effect of Current

  • Whenever a current is flowing in the resistance then heat is produced in it. The phenomenon of producing heat by the electric current is called as the heating effect of electric current.
  • The amount of heat produced (H) in joules  = I2 R t

Where I is current, R is resistance and t is the time taken. 

  • Appliances like Fuse, electric heaters, etc. are based on the concept of heating effects of Light. 

Overloading and Short-Circuiting

  • Overloading happens when the magnitude of current in the electrical devices or wires exceeds the permissible limit. 
  • In such cases, if precautions have not been taken, huge damages to the appliances and wires can happen. 
  • In worse condition, it may lead to huge financial losses and causes a serious threat to life. 
  • Short-circuiting is one of the reasons for overloading. 
    • In household circuiting, when the live wire touches the neutral wire, the path of the circuit get shorten and more current starts flowing in the circuit. 
    • This causes overloading.

Electric Fuse

  • A fuse is a short length of wire designed to melt and break the circuit in the situation of overloading. 
  • Fuse comes with different permissible limits of current. 
    • For example, the limit of the fuse is 5 A, if current more than 5 A will start flowing in the circuit, the fuse will melt. 
  • Fuse is generally placed in series with the device so that in case of a short circuit or excess amount of current start flowing in a circuit the fuse blows or melt,.
  • This will break the circuit and stop the flow of current through the main component and hence prevents damage to equipment.

Conclusion:

  • An electric fuse is used to protect the home appliances from short circuits and overloading by melting itself. 
  • The correct option is 'use of fuse. '

Additional Information

Miniature circuit breaker(MCB):​

  • It is a kind of electronic switch that functions automatically.
  • It can detect a problem occurring inside a circuit by identifying the extreme amount of current flow in the circuit.
  • If there is a large amount of power available in the loop, it can break the loop at any moment.

Earthing

  • Earthing is done to prevent the shock caused due to leakage of current.
  • A wire from the main circuit is connected to the ground. 
  • This provides a path of leakage of current from certain appliances. 

Related Questions

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The most important safety method used for protecting home appliances from short circuiting or overloading is
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