Read the introduction from a science website.

Electromagnetic force sounds very complicated, but I wanted to understand how it works. My experiment allowed me to create my own electrical field using a nine-volt battery, an iron nail, and some paperclips. This experience helped me understand electromagnetism and the way it works.

Which focus question is the author trying to answer?

How does a nine-volt battery work?
How does electromagnetic force work?
How much electricity is stored in a battery?
How much iron is contained in paperclips?

Respuesta :

Answer:

How does electromagnetic force work?

Explanation:

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Answer:

B.) How does electromagnetic force work?

Explanation:

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