Electromagnetism (Electromagnets, Generators & Simple Electric Motors)

Match the term to the definition! a magnet an electric current flowing through a wire produces _. a electric current wire spinning around a magnet produces _. Electromagnets! Please watch the video and fill in the blanks. One characteristic of regular magnets is that they have opposite poles that attract and similar poles that repel. The magnetic field of a magnet can affect certain objects around it. For example, when a compass it placed near a magnet, its needle will point in the direction of the magnetic field. When you add an electric current to a coil of wire it will produce a magnet. An iron core makes the magnet stronger. Unlike a regular magnet, you can turn off an electromagnet by removing the electrical current. Generators! Please watch the video and answer the questions below In order to make a generator work, you need a coil of wire and _. a magnet electricity a light bulb The generator will produce electricity only when you _ the wire around the magnet. crank (or rotate) twist tap What happens if you rotate the wire very, very fast but REMOVE the magnet? the wire will cool off. electricity will still be produced! Nothing! Simple Electric Motors! Watch to see how simple electric motors work Use your notes on Simple Electric Motors to help you fill in the blanks. A simple electric motor works by rotating an electromagnet around a magnet. The source of the electromagnet comes from a battery. The electric current from battery creates an magnetic field around the coiled wire. That magnetic field causes the electromagnet coil to spin or rotate. If the coil is attached to a shaft (like on a car), it changes electrical energy into mechanical energy. This is how the wheels on a car move! Match the term to the definition! electromagnets an electric current flowing through a wire wrapped around iron generators a coil of wire spinning around a magnet simple electric motors an electromagnet spinning around a magnet