Question

You are planning an investigation to provide evidence that an electric current can produce a magnetic
field. Which of the following should you do?

I. Wrap a copper wire tightly around a nail.
II. Connect to a source of electrical energy.
III. Place a bar magnet on metal.
IV. Use metal to test the magnetic field.

(1 point)

II and IV.

III and IV.

I, II, and IV.

I, III, and IV.

Answer 1

To provide evidence that an electric current can produce a magnetic field, you should take the following steps:

I. Wrap a copper wire tightly around a nail. (This creates an electromagnet when an electric current is passed through the wire.)
II. Connect to a source of electrical energy. (This is necessary to allow the electric current to flow through the wire.)
IV. Use metal to test the magnetic field. (This can help you observe the effects of the magnetic field created by the electric current.)

III. Place a bar magnet on metal is not relevant to demonstrating that an electric current can create a magnetic field.

Thus, the correct choice that includes the relevant steps for your investigation is **I, II, and IV.**