State whether the following statements are true or false :
(a) A wire with a green insulation is usually the live wire.
(b) A miniature circuit bearker (MCB) works on the heating effect of current.
State True or False:
A wire with green insulation is usually the live wire of an electric supply.
State whether following statements are True or False:
(a) An electric motor converts mechanical energy into electrical energy
(b) An electric generator works on principle of electromagnetic induction
(c) The field at the center 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