Q. 74.1( 109 Votes )
List three sources of magnetic fields.
Answer :
The Magnetic fields can be produced:
a) By using a permanent magnet.
b) By passing electric current through circular coil.
c) By using an electromagnet.
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PREVIOUSState 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 supplyNEXTHow does a solenoid behave like a magnet? Can you determine the north and south poles of a current carrying solenoid with the help of a bar magnet? Explain.
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