NCERT Exercise 12.1 — Q3 - Magnetic Effects of Electric Current
Question: State whether the following statements are true or false. (a) The field at the centre of a long circular coil carrying current will be parallel straight lines. (b) A wire with a green insulation is usually the live wire of an electric supply.
Answer: (a) **True**. (b) **False** — green wire is the earth wire.
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