how do short circuit overload occurs in domestic circuit? name the device that protects electrical appliences from short circuit, the device must have high melting point and low resistance. why?
Answers
Short circuit occurs when live and neutral wire comes in direct contact and then a large of current is produced.
Overloading occurs when a large amount of appliances to a single socket which increases the following current.
Electrical Fuse
- The fuse must have high melting and low resistance so as it can melt if current larger than the specified value flows through the circuit.
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Answer:
short circuit occurs in the conditions like when insulation of red and black (live and neutral)wire wilts away and the live wire touches the neutral wire,Sparks are generated which leads to short circuit
overloading is a case when many appliances are connected to a single plug or appliance with high power consumption or device drawing more amount of current from the electric circuit than it's own capacity.
Explanation:
thus overloading occurs but,to prevent such situations we have a safety device called as the fuse,it is made up of a wire which has a high melting point and low resistance so that it melts and breaks the circuit when excessive amount of current is drawn by the circuit or any appliances