Question | Answer |
electric charge | a fundamental property that leads to the electromagnetic interactions among particles that would 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 electric current better than an insulator does but not as well as a conductor does. |
electric current | the rate at which electric charges pass a given point. |
resistance | in physical science the opposition presented to the current by a material or device. |
voltage | the amount of work to move a unit electri |
electric circuit | a set of electrical compounds connected such that they provide one or more complete paths for the movement of charges. |
series circuit | a circuit in which the parts are joined one after another such as the current in each part is the same. |
parallel circuit | a circuit in which the parts are joined in branches such as that the voltage across each part is the same. |
magnet | any material that attracts iron or materials containing iron. |
magnetic force | the force of 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 quality. |
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 indution | 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 circuit. |
electric generator | a device that converts mechanical energy into electrical energy. |
electronic device | a device that is produces or is powered by a flow of electrons and contains an integrated curcuit. |
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 and output the result. |