The document presents results from an experiment investigating electromagnets. It shows that increasing the number of coils or the current in an electromagnet increases the number of drawing pins attracted. Graphs illustrate the direct relationship between the number of coils/current and the number of drawing pins attracted.

1. Investigating electromagnets – results
Here are some example results.
number of number of
number current
drawing pins drawing pins
of coils (A)
attracted attracted
0 0 0 0
20 8 1 12
40 18 2 23
60 31 3 38
80 46 4 49

2. Investigating electromagnets – analysis
How did the number of coils affect the number of drawing
pins attracted to the electromagnet?
50
number of drawing pins attracted
40
30
20
10
0
0 20 40 60 80 100
number of coils

3. Investigating electromagnets – analysis
How did the size of the current affect the number of
drawing pins attracted to the electromagnet?
60
number of drawing pins attracted
50
40
30
20
10
0
0 1 2 3 4 5
current (A)