Question

which electromagnet is the strongest?

Explanation:

Step1: Recall electromagnet strength factors

The strength of an electromagnet depends on the number of wire coils (turns) around the core, assuming the same core and current. More coils mean a stronger magnetic field.

Step2: Compare the number of coils

• First electromagnet: Let's count the coils (turns) – say around 6.
• Second electromagnet: Count the coils – around 8 (more than the first).
• Third electromagnet: Count the coils – around 5 (less than the first and second).

So the second electromagnet (middle one) has the most coils, hence the strongest.

Answer:

The middle electromagnet (with the most wire coils around the core) is the strongest.