Work is stored in the charges as electric potential energy The energy is also called voltage, after Volta Voltage is the "pressure" that pushes current around The unit of electric potential is the Volt Only differences in voltage matter Charge flows from higher to lower voltage Greater voltage difference: more energy, stronger force acting on the moving charges Sometimes called potential difference Voltage Magnetism Use to generate electricity on a large scale The first magnets discovered by people were lodestone, which attracted iron Magnets can attract or repel each other, just like electrical charges Unlike charges, the same two magnets can be made to attract or repel each other Magnetism Magnetic effects are strongest at the ends of a magnet These are called the poles of the magnet (N&amp;S) Like poles repel and opposite poles attract One of the most common uses of magnets used to be the simple compass North pole of a magnet points toward North, the South pole points toward South, hence the name Occurs because the Earth has a magnetic field A magnetic field is a map of the direction and strength of the forces a magnet exerts Where does magnetism come from?
(The first magnets; discovered; by people) (the Earth; has; a magnetic field) (A magnetic field; is; a map of the direction and strength of the forces) (iron Magnets; repel; each other) (poles; repel; ) (The energy; is also called; voltage) (stronger force; acting; on the moving charges) (opposite poles; attract; One of the most common uses of magnets) (Volta Voltage; is; the "pressure" that pushes current around The unit of electric potential) (more energy, stronger force acting on the moving charges Sometimes called potential difference Voltage Magnetism Use to generate electricity on a large scale The first magnets discovered by people were lodestone; attracted; iron Magnets can attract or repel each other) Context(more energy , stronger force acting on the moving charges Sometimes called potential difference Voltage Magnetism Use to generate electricity on a large scale The first magnets discovered by people were lodestone attracted,List([307, 535))):(iron Magnets; can attract; ) (the "pressure; pushes; current; around The unit of electric potential) (The first magnets discovered by people; were lodestone; ) (the most common uses of magnets; to be; the simple compass) (These; are called; the poles of the magnet) (the same two magnets; can be made; to attract or repel each other Magnetism Magnetic effects are strongest at the ends of a magnet)
more energy , stronger force acting on the moving charges Sometimes called potential difference Voltage Magnetism Use to generate electricity on a large scale The first magnets discovered by people were lodestone attracted,List([307, 535))
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