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What is short circuiting ? State one factor/ condition that can lead to it. Name a device in the household that acts as a safety measure for it. State the principle of its working.

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The situation in which live and neutral wire come in direct contact, abruptly increasing the current in the circuit is called short- circuiting.

Factor- Insulation of wire is damaged/fault in the appliance.

Safety device- an electric fuse. An electric fuse is an application of Joule's heating, If there is a current larger than the specified, value to, break the electric circuit and stop the flow of unduly high electric current.

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