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    Physics
    Grade-7
    Easy

    Question

    Which of the following acts as a safety device in electric appliances?

    1. Resistors
    2. Fuse
    3. Battery
    4. Connecting wires

    hintHint:

    Fuse

    The correct answer is: Fuse

      When excessive current flows through the circuit the wire of the fuse gets melted due to its lower melting point and open circuits the entire the electric circuit. This protects the appliances connected to the electric circuit from being damaged due to the heavy flow current through it.

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