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CBSE Class 7 Answered

why is overloading in circuit dangerous

 

Asked by Shreeya Nemani | 25 Aug, 2018, 02:41: PM
Expert Answer
Overloading of electric circuit means that the current circulating in the circuit becomes more than the capacity of components in the circuit to withstand the current.
All components in the circuits have some resistance passage of electricity through this resistance produces heat which is directly proportional to the square of current flowing.
The components are designed to withstand only that much of heat as is generated by maximum designed current. When the current is more than this level, or in other words when the circuit is overloaded the components get overheated, leading to their damage.
 

Precautions should be taken to avoid overloading in domestic circuits -

 
1. Too many high power rating electrical appliances should not be switched on at the same time.
2. Too many electrical appliances should not be operated on a single socket.

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