Question

Explain what it means when we say a substance is magnetic.

Discuss the relationship between electric and magnetic fields.



Which type of wires (copper, aluminum, or string) are ferromagnetic metals?

a) Copper
b) Aluminum
c) String
d) None of the above



Open the lab interactive and run a few trials changing the variables each time. Decide which variable you want to change in order to make a strong electromagnet and record it here. This will be your independent variable.

Answer 1

A substance is magnetic if it can attract or repel other magnetic materials. The relationship between electric and magnetic fields is described by electromagnetism. Copper and aluminum are not ferromagnetic metals, while iron and steel are examples of ferromagnetic metals. To make a strong electromagnet, increase the number of turns in the coil of wire.

Step-by-step explanation:

When we say that a substance is magnetic, it means that the substance has the ability to attract or repel other magnetic materials. The term 'magnetic' refers to the property of a material to interact with magnetic fields.

The relationship between electric and magnetic fields is described by electromagnetism. When an electric current flows through a wire, it produces a magnetic field around the wire. Similarly, a changing magnetic field can induce an electric current in a wire, which is the principle behind electromagnetic induction.

Ferromagnetic metals are those that exhibit strong magnetic effects and can be magnetized themselves. Copper and aluminum are not ferromagnetic metals, while iron and steel are examples of ferromagnetic metals.

In order to make a strong electromagnet, the variable that can be changed is the number of turns in the coil of wire. Increasing the number of turns increases the strength of the magnetic field produced by the electromagnet.