Asked by Sophea

Select four of the following that would increase the magnetic field of an electromagnet.
Responses

having a thicker wire
having a thicker wire

no battery attached
no battery attached

the number of wire coils
the number of wire coils

having a large iron core
having a large iron core

the closeness of wire coils
the closeness of wire coils

having a longer wire
having a longer wire

All Answers 1

Answered by GPT-5 mini AI
Select:
- having a thicker wire
- the number of wire coils
- having a large iron core
- the closeness of wire coils

Why (brief): thicker wire lowers resistance so allows more current for a given battery; more coils and tighter (closer) coils increase the magnetic field strength per unit length; an iron core concentrates and amplifies the field.