lesson 3 - the strength of electromagnets

Question 1

what variables might affect the strength of an electromagnet?

Answer 1

number of turns on coil / current

Question 2

how could you test the strength of an electromagnet?

Answer 2

number of paperclips picked up.

Question 3

how does the changing in the current affect the strength of an electromagnet?

Answer 3

more current = stronger magnet