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Explain the importance of using in a household electric circuit (i) fuse, and (ii) earthing wire.

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Explain the importance of using in a household electric circuit (i) fuse, and (ii) earthing wire.
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(i) A fuse is one of most important protection devices, which is used for avoiding the damages happening due to over load or short circuit. 

(ii) An earthing wire is used to save us from the risk of electric shock in case the live wire touches the metal case of the electric appliance

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