which between steel and iron which is more suitable for making permanent magnets electromagnet and magnetic screen ​

steel is suitable for making permanent magnet

as still has hi factor coercity.

iron is for electromagnet and magnetic screen as iron loses its magnetism as soon as the switch is open and a current is switched off.

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

it should be -8.6 cm hope this out