Write true if the statement is correct about electromagnet and false if it is incorrect on the blank each number
1.anelectromagnet works only when there is a flow of electricity
2. without core or magnetic material electromagnet cannot be produced
3..coils of wire serves as the conductor of electricity
4.even without source of the electricity from the battery electromagnet can still be produced.
5.when the current is broken the nail is no longer a magnet​