Question | Answer |
law of electric charges | the law that states that like charges repel and opposite charges attract |
electric force | the force of attraction or repulsion on a charged particle that is due to an electric field |
electrical conductor | a material in which charges can move freely |
electrical insulator | a material in which charges cannot move freely |
static electricity | electric charge at rest; generally produced by friction or induction |
electric discharge | the release of electricity stored in a source |
electric current | the rate at which charges pass through a given point; measured in amperes |
voltage | the potential difference between two points; measured in volts |
resistance | in physical science, the opposition presented to the current by a material or device |
cell | in physics, in electricity, a device that produces an electric current by converting chemical or radiant energy into electrical energy |
thermocouple | a device that converts thermal energy into electrical energy |
photocouple | a device that converts light energy into electrical energy |
electric power | the rate at which electrical energy is converted into other forms of energy |
series circuit | a circuit in which the parts are joined one after another such that the current in each part is the same |
parallel circuit | a circuit in which the parts are joined in branches such that the potential difference across each part is the same |
magnet | any material that attracts iron or materials containing iron |
magnetic pole | one of two points, such as the ends of a magnet, that have opposing magnetic qualities |
magnetic force | the force of attraction or repulsion generated by moving or spinning electric charges |
electromagneticism | 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 |
electric generator | a device that converts mechanical energy into electrical energy |
transformer | a device that increases or decreases the voltage of alternating current |