Which one of the following statements is <strong>not</strong> correct?
- A. An electric motor converts electrical energy into mechanical energy.
- B. An electric generator works on the principle of electromagnetic induction.
- C. The magnetic 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. ✓
Correct Answer: D. A wire with a green insulation is usually the live wire of an electric supply.
Explanation
A wire with green insulation is standardly used for the earth (grounding) wire, whereas the live wire usually has brown or red insulation.
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