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What does “MCB” stand for?

What does “MCB” stand for? Correct Answer Miniature circuit breaker

“MCB” stands for Miniature circuit breaker. It works on magnetic effect of electric current. When there is overflow of electric current, it creates a magnetic field that repels the magnet present in the switch. This repulsion breaks the circuit and restricts the flow of current.

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What is the principal on which MCB (Miniature circuit breaker) works ?
What will be the value of mCB, after solving these equations?
What will be the value of mCB?