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Question

Question 6
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 of an electric supply.

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Solution

(a) An electric motor converts mechanical energy into electrical energy - false
=> An electric motor converts electrical energy into mechanical energy.
(b) An electric generator works on the principle of electromagnetic induction - true
(c) The field at the centre of a long circular coil carrying current will be parallel straight lines - true
(d) A wire with a green insulation is usually the live wire of an electric supply - false
=> Live wire has red insulation cover, whereas earth wire has green insulation colour in the domestic circuits.

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