True or false?!?

Question

1. An electromagnet can be made stronger by increasing the number of coils of wire.

2. A piece of iron can be made into a permanent magnet by stroking it with a strong magnet.

Answer 1

1. true

Why do more coils make a stronger electromagnet?

More coils make a stronger electromagnet because every coil makes a small magnetic field, if you have enough of them close enough together it will be stronger.

2. true.

Answer 2

yes

yes

Answer 3

Both are true