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8CK Elec & Magnetism

8th CK SCI Elecricity & Magnetism - COMPLETE

ampere(s) Unit of current
attract to pull to or toward oneself or itself (electron-proton interaction)
capacitor a device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator
circuit breaker an automatic device for stopping the flow of current in an electric circuit as a safety measure
conductors materials through which electrons move freely
current the rate at which charge passes a given point.
electricity electric charges that flow through a wire or similar material
fuse a safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level
ground a direct electrical connection to the earth, a connection to a particular point in an electrical or electronic circuit, or an indirect connection that operates as the result of capacitance between wireless equipment and the earth or a large mass of conduc
insulators materials through which charges of an electric current are not able to move freely
lightning rod a pointed rod connected to the ground by a wire to provide an easy path for the electric charge to travel to the Earth and not cause damage to buildings.
closed circuit .a complete electrical connection around which current flows or circulates. When you have a series of electrical wires connecting to each other and completing a circuit so that current travels from one end of the circle to the other, this is an example.
ohm(s) Unit of resistance
open circuit an electrical circuit that is not complete
opposite charge(s) The electric fields tend to result in a repulsive force between particles with charges of the same sign, and an attractive force between charges of opposite sign. The electron is defined to have an electric charge of -1; the protons in an atomic nucleus h
electric power the rate at which electrical energy is used to do work.
repel to force away or apart (electron-electron, proton–proton interactions)
resistance the opposition to the flow of electric charge.
short circuit sudden surge in amperage due to the reduction of resistance in a circuit
static (charge/electricity) the buildup of electric charges in an object
units a quantity chosen as a standard in terms of which other quantities may be expressed
volt(s) Unit of Voltage
watt(s) Unit of power
Electric charge a property of electrons and protons, electrons carry a negative charge and protons carry a positive charge
Magnetism the force of attraction or repulsion of magnetic materials
Electric generator a device that uses motion and converts it into electric current
Electric Current the flow of electric charge through a material
Electromagnet a strong magnet that can be turned on and off
Molten melted especially by intense heat
Magnetic poles the ends of a magnetic object, where the magnetic force is strongest
Van Allen Belts two doughnut-shaped regions that contain electrons and protons traveling at very high speeds
Magnetosphere the region of Earth’s magnetic field confined by solar wind
Navigation method of determining position, course and distance traveled
Magnetic Compass a device that has a magnetized needle that can spin freely, a compass needle always points north
Alternating current current consisting of charges that move back and forth in a circuit
Step-up transformer a transformer that increases voltage
Step-down transformer a transformer that decreases voltage
Voltage the difference in electrical potential between two places
Electrical potential potential energy per unit of electric charge
Transformer a device that increases or decreases voltage
Electric motor a device that use electric current to produce motion
Created by: artisteacher



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