What would happen to the magnetic field if she connects the battery in the opposite direction?

5 answers
Question:

What would happen to the magnetic field if she connects
the battery in the opposite direction?

Answers

C) The field would reverse its poles.

Explanation:

The given diagram shows an electromagnet. A iron nail is placed between coil through which current is passes as it is connected to the battery.

When the terminals are reversed, the current still flows but in the opposite direction. Magnetic field is still generated but with the reversed poles.  

Magnetic field produced:

B = μ n I

The direction of the magnetic field reverses with the direction of the current.

the answer is C) The field would reverse its poles.

Explanation:

When the electric current flows through a conductor a magnetic field is produced near the conductor.

When the direction of current is reversed the direction of magnetic field is also reversed.

The field reverses its poles, meaning that the flow of negative and positive charges will cause an overall switch in the magnetic poles of the field.

The field would reverse its poles.

Explanation:

The current flow will reverse directions which will reverse the poles in the magnetic field created around the iron nail.

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