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MVMS Electricity and

MVMS Electricity and Magnetism

Magnet An object that attracts anything made of iron, cobalt and nickel.
Repel To drive away or force backwards
Attract To cause to come near
Magnetic Force The force of attraction or repulsion between poles of a magnet
Magnetic Field The area around a magnet
Magnetosphere The earth’s magnetic field
Electric Current The flow of electrons
Electromagnet Is a temporary strong electrically charged magnet. When current is removed the electromagnet no longer attracts.
Generator Converts mechanical energy to electrical energy
Motor Converts electrical energy to create movement (mechanical energy)
Amperes (Amps) The measure of the flow of electrons
Ammeter The instrument that measures electrical current
Voltage Measures how much electric potential energy an electron can gain, the “push power”
Battery Converts chemical energy into electrical energy
Resistance Is the measurement of how difficult it is for electrons to flow through material
Ohms The unit of measurement for resistance
Electron The negatively charge part of an atom
Conservation of Charge Charges can be transferred but never created or destroyed
Negative charge A result of gaining electrons
Positive charge A result of losing electrons
Neutral charge Having equal number of electrons and protons
Static Electricity An imbalance of electrons on an object
Electric Field The area or field around a charge that causes other electric charges to be attracted or repelled
Conductors Material in which electrons are able to move through easily
Insulators Material in which electrons are NOT able to move through easily
Static Discharge Is the rapid movement of an excess charge from one place to another
Grounding Is the process of providing a pathway to drain the excess charge into the earth
Series Circuit Has only ONE PATH for electrical current to flow
Parallel Circuit Has more than one path for electrical current to flow
Fuse A mini circuit that contains a small piece of metal that melts if the current becomes too high. When the metal melts the circuit is broken, stopping the flow of current through the overloaded circuit.
Breaker contains a piece of metal that bends when the current in it is so large that it gets hot. The bending causes a switch to flip and open the circuit, stopping the flow of current.
Electric Power The rate at which an appliance converts electrical energy to another form of energy.
Created by: bonniehodder