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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 |