Drill
... An electromagnet is a magnet that consists of a solenoid wrapped around an iron core. A solenoid is a coil of wire that produces a magnetic field when carrying an electric current. ...
... An electromagnet is a magnet that consists of a solenoid wrapped around an iron core. A solenoid is a coil of wire that produces a magnetic field when carrying an electric current. ...
PDF Format - 6 slides per page - Earth, Atmospheric, and Planetary
... • The planetary model of the atom can explain many (but not all!) aspects of electromagnetism. • Electric charge is conserved: no net charge can be y created or destroyed. • Electric current is due to the flow of electrons (although we talk about current as if it is the flow of positive charge!). • ...
... • The planetary model of the atom can explain many (but not all!) aspects of electromagnetism. • Electric charge is conserved: no net charge can be y created or destroyed. • Electric current is due to the flow of electrons (although we talk about current as if it is the flow of positive charge!). • ...
21.2 Electromagnetism
... The electric force results from charged particles moving through something. The magnetic force usually results from the movement of electrons in an atom. ...
... The electric force results from charged particles moving through something. The magnetic force usually results from the movement of electrons in an atom. ...
Discovering Electricity
... new science that he named ‘electrodynamics’, which is called electromagnetism today. In 1820 he discovered that a magnetic attraction or repulsion existed between two wires carrying current, depending on the direction of the flow. He developed a mathematical theory about the relationship between ele ...
... new science that he named ‘electrodynamics’, which is called electromagnetism today. In 1820 he discovered that a magnetic attraction or repulsion existed between two wires carrying current, depending on the direction of the flow. He developed a mathematical theory about the relationship between ele ...
Electricity, Magnetism
... Electricity, Magnetism, and Motion (pages 85–89) Electrical Energy and Motion ...
... Electricity, Magnetism, and Motion (pages 85–89) Electrical Energy and Motion ...
Electric current
An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. Electric current is measured using a device called an ammeter.Electric currents cause Joule heating, which creates light in incandescent light bulbs. They also create magnetic fields, which are used in motors, inductors and generators.The particles that carry the charge in an electric current are called charge carriers. In metals, one or more electrons from each atom are loosely bound to the atom, and can move freely about within the metal. These conduction electrons are the charge carriers in metal conductors.