Question

Which combination of a wire coil and a core would make the strongest
electromagnet?
A. 90 coils of bare wire around a hollow cardboard core
B. 50 coils of bare wire around a steel bolt
C. 50 coils of insulated wire around a hollow cardboard core
D. 90 coils of insulated wire around a steel bolt

Answer 1

Answer:

Its D

Explanation:

Doing the test right now

Answer 2

90 coils of insulated wire around a steel bolt combination would make the strongest electromagnet.

Which would make the strongest electromagnet?

An electromagnet is stronger if there are more turns in the coil of wire or there is more current flowing through it.

How did the increase in the number of coils affect the strength of the electromagnet?

The strength of the magnetic field increases when the number of turns in the coil increases .

Hence, D is correct option

To learn more about electromagnet ,here

https://brainly.com/question/1423150?referrer=searchResults

#SPJ3