Question
You are planning an investigation to provide evidence that a changing magnetic field can produce an
electric current. Which of the following should you do?
I. Wrap a copper wire tightly around a container.
II. Connect to a source of electrical energy.
III. Place a magnet so that it move within the wire wrapped container.
IV. Use a small light bulb to test the electric current.
(1 point)
answers below:
I, III, and IV.
I and III.
I, II, and IV.
II and IV.
electric current. Which of the following should you do?
I. Wrap a copper wire tightly around a container.
II. Connect to a source of electrical energy.
III. Place a magnet so that it move within the wire wrapped container.
IV. Use a small light bulb to test the electric current.
(1 point)
answers below:
I, III, and IV.
I and III.
I, II, and IV.
II and IV.
Answers
GPT-4o mini
To investigate whether a changing magnetic field can produce an electric current, you should follow the steps that focus on the principles of electromagnetic induction.
The most relevant steps from your list are:
- **I. Wrap a copper wire tightly around a container.** (This is necessary to create an induced electric field in the wire.)
- **III. Place a magnet so that it moves within the wire wrapped container.** (Moving a magnet creates a changing magnetic field, which is essential for inducing current according to Faraday’s law of electromagnetic induction.)
- **IV. Use a small light bulb to test the electric current.** (This can help you detect if an electric current has been generated.)
Connecting to a source of electrical energy (II) is not necessary for this investigation, as you want to see if the magnetic field change can create an electric current independently.
Therefore, the correct answer is:
**I, III, and IV.**
The most relevant steps from your list are:
- **I. Wrap a copper wire tightly around a container.** (This is necessary to create an induced electric field in the wire.)
- **III. Place a magnet so that it moves within the wire wrapped container.** (Moving a magnet creates a changing magnetic field, which is essential for inducing current according to Faraday’s law of electromagnetic induction.)
- **IV. Use a small light bulb to test the electric current.** (This can help you detect if an electric current has been generated.)
Connecting to a source of electrical energy (II) is not necessary for this investigation, as you want to see if the magnetic field change can create an electric current independently.
Therefore, the correct answer is:
**I, III, and IV.**