Electromagnet investigation

In investigation 1, what did we learn about how the strength of an electromagnet increases with current?

• The strength increases proportionally

• The strength increase inversely proportionally

• The strength doesn't change

• The strength decreases with increasing current

Draw the rough shape of the graph you obtain, also consider whether it should go through the origin.

What problems did you encounter in the first investigation? Did you come up with any strategies or solutions to make the experiment work?

In the second investigation, how did the number of turns affect the strength of an electromagnet?

• Magnetic Strength increased proportional with number of turns

• Magnetic Strength decreased proportional with number of turns

• Magnetic Strength was inversely proportional to the number of turns

• Magnetic Strength stays constant

What would be the best way to make a strong electromagnet? Detail all the steps needed, it may not be simply what you investigated today.