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An electric bell, works on the principle...

An electric bell, works on the principle of electromagnetic induction.

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State whether the following statements are true or false. (a) An electric motor converts mechanical energy into electrical energy. (b) An electric generator works on the principle of electromagnetic induction. (c) The field at the centre of a long circular coil carrying current will be parallel straight lines. (d) A wire with a green insulation is usually the live wire.

Consider the following statements about an electric bell: I. An electric bell works on the principle of magnetic effect of current II. An electric bell consists of an electromagnet III. An electric bell produces sound continuously Among the given statements,