The student wants to use nails made of different metals to see which type of nail makes the best electromagnet.
Which investigation should the student perform to determine which type
of nail makes the strongest electromagnet?
Oь
Ос
Od
Wrap each type of nail with a different number of coils of the same type of wire and record how many paper clips each nail picks
up.
Wrap each type of nail with 40 coils of the same type of wire and record how many paper clips each nail picks up.
Wrap as many coils as possible around each type of nail and record which type of nail can hold the most coils.
Wrap each type of nail with a different type of wire and record how many paper clips each nail picks up.