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7th ISB Electricity
Question | Answer |
---|---|
Ohms Law | resistance is equal to the voltage divided by the current |
electric current | the continuous flow of electric charges through a material |
Ampere | the amount of charge flowing past a given point each second |
electric circuit | complete unbroken path through which electric charges can flow |
open circuit | a broken circuit that interupts an electric current. |
conductor | a material through which an electric current can flow easily |
insulator | a material through which an electric current can not easily flow |
voltage | the difference in electrical potential energy between two places in a circuit. |
Volt | the measure of voltage |
resistance | the measure of how difficult it is for charges to flow through a material |
ohm | the unit of measure for resistance |
factors that affect resistance | type of material wire is made of, length of wire, diameter of wire, temperature of wire |
voltage | equals current times resistance |
features of an electrical circuit, it.. | has devices that run by electrical energy, a source of electrical energy, is connected by conducting wires |
series circuit | only one path for the current to take |
ammeter | device to measure current |
chemical energy | energy stored in chemical compounds |
electrochemical cell | a device that transforms chemical energy into electrical energy. can be stacked to form a battery |
terminal | part of the battery above the electrolyte |
electrolyte | substance that conducts electric current. |
wet cell battery | the electrolyte is liquid in the battery |
dry cell battery | the electrolyte is a paste in the battery |
Parallel circuit | provides several paths for the flow of electrons. |
ion | a charged atom |
static electricity | electricity that is not moving |
electron flow in a circuit | shows the flow from the negative to positive terminals |
conventional electric flow in a circuit | runs counter to the electron flow from positive to the negative terminals |