Generally, MCBs are designed to protect the household appliances from high _________.

dust

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current

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heat

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light

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Solution

The correct options are
B current
C heat
A Miniature Circuit Breaker(MCB) is a device whose function is similar to that of a safety fuse. It protects the household appliances from large currents. Also because of high temperature faults, the circuit can get damaged. An MCB also takes care of the overheating issue along with over current or high current.

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Earthing is provided for electrical appliances in a building to protect it from ______.

220 V

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