Question

Question 9
How could you increase the strength of your electromagnet?

(Select all that apply)

a
Increase the number of coils
b
Decrease the current flowing through the coils
c
Decrease the number of coils
d
Increase the current flowing through the coils
Question 10
What are some of the uses of electromagnets from the video?

(Select ALL correct answers)

a
junk yards
b
toasters
c
cars
d
ball point pens
Question 11
What are the benefits, "strengths" of electromagnets? (Select ALL correct answers)

a
They can be turned off and on
b
They require electricity to work
c
They can be made stronger
d
Greater strength (compared to regular magnets of the same size)
Question 12
What are the downsides, "weaknesses" of electromagnets?

(Select ALL correct answers)

a
They can be stronger, for the size, than regular magnets
b
To work like permanent magnets, they require a constant source of power
c
They can be made stronger
d
They require power/electricity

Answer 1

Question 9: a and d

Question 10: a and c

Question 11: a, c, and d

Question 12: b and d