1
Question
An MCB which cuts off the electricity supply in case of short-circuiting or overloading works on the :
(a) chemical effect of current
(b) heating effect of current
(c) magnetic effect of current
(d) electroplating effect of current
An MCB which cuts off the electricity supply in case of short-circuiting or overloading works on the :
(a) chemical effect of current
(b) heating effect of current
(c) magnetic effect of current
(d) electroplating effect of current
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Solution
The correct option is (c) magnetic effect of current.
MCB(miniature circuit breaker) contains an electromagnet. When the current increases heavily, the electromagnet become strong to separate the pair of contacts and break the circuit.
The correct option is (c) magnetic effect of current.
MCB(miniature circuit breaker) contains an electromagnet. When the current increases heavily, the electromagnet become strong to separate the pair of contacts and break the circuit.
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