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unit 3

TermDefinition
electric charge a fundamental property that leads to the electromagnetic interactions among particles that make up matter
static electricity electric charge at rest generally produced by friction or induction
electrical conductor a material in which charges can move freely
electrical insulator a material in which charges cannot move freely
semiconductor an element or compound that conducts electrical current better than an insulator but not as well as a conductor does
electrical current the rate at which electrical charges pass a given point
voltage the amount of work to move a unit electric charge between two points expressed in volts
resistance in physical science the opposition presented to the current by a material or device
electric circuit a set of electrical components connected such that they provide one or more complete paths for the movement of charges
series circuit a circuit in which the paths are joined one after another such that the current in each path is the same
parallel circuit a circuit in which the parts are joined in branches such that the voltage across each part is the same
magnet any material that attracts iron or materials containing iron
magnetic force the force or attraction or repulsion generated by moving or spinning electric charges
magnetic pole one of two points such as the ends of a magnet that have opposing magnetic qualities
magnetic field a region where a magnetic force can be detected
electromagnetism the interaction between electricity and magnetism
solenoid a coil of wire with an electric current in it
electromagnet a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil
electric motor a device that converts electrical energy into mechanical energy
electromagnetic induction the process of creating a current in a circuit by changing a magnetic field
transformer a device that increases or decreases the voltage of alternating current
electric generator a device that coverts mechanical energy into electrical energy
electronic device a device that produces or is powered by a flow of electrons and contains an integrated circuit
integrated circuit a circuit whose components are formed on a single semiconductor
analog signal a signal whose properties can change continuously in a given range
digital signal a signal that can be represented as a sequence of discrete values
computer an electronic device that can accept data and instructions follow the instructions and output the results
Created by: 18delucian0902