Electromagnetic Force

2 Components of the Electromagnetic Force Electric Force – causes static electricity and causes the flow of electric charge to make electrical currents Magnetic Force – associated with magnets Both forces are caused by their fields – the field produces the force Electromagnetic force describes the push and pull of objects based on charge and distance

Coulomb’s Law Charged particles exert forces on each other Like charges repel unlike charges attract (just like poles of a magnet) The greater the distance between the charges, the less force they exert on each other.

Magnetic Force Opposite poles of magnets attract while like poles repel – north and south attract, north and north or south and south repel The attraction or repulsion is the magnetic field

Electricity and Magnetism Electricity and magnetism are components of the same force They are dependent on one another and influence each other Electricity creates a magnetic field and a magnetic field can be used to produce electricity

Electromagnets And electromagnet is made by coiling a wire around a conducting core When electricity runs through the wire and core a strong magnetic field is created It can be turned on and off by turning the electric current on and off

Induction Generators An electric current can be created by moving a magnet though a coil – this is called electromagnetic induction Generators use electromagnetic induction to produce an electric current.