8th Class Science Chemical Effects of Electric Current Question Bank Chemical Effects of Electric Current

  • question_answer 14) Why is the switch for any electrical appliance in ac circuit always connected to the live wire?

    A)  No current flows in the neutral wire.

    B)  There will be a short circuit if the switch is in the Earth lead.

    C)  The device can be switched off easily if the switch is in the neutral lead.

    D)  The device can be isolated (mode safe) if the switch is in the live lead.

    Correct Answer: D

    Solution :

    The purpose of electric switch is to make and break the circuit as per our requirements. So it should be connected to the live wire. If the switch is in the neutral lead, the device can never be switched off.

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