5770160
Description
Flashcards by Nyakek Roum, updated more than 1 year ago
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Created by Nyakek Roum
over 8 years ago
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| Question | Answer |
| What is electricity? | Electricity is a form of energy that can be changed from or into another form of energy by technogical devices. |
| What is a cell? | A cell is a device that changes chemical energy into electrical energy |
| What do cells need to change chemical energy into electrical energy? | They need two different metal electrodes and an electrolyte. |
| What do atoms have the ability of doing? | Atoms have the ability of building up a charge by gaining or losing electrons. |
| According to the Law of Electrical Charge... | Opposite charged objects attract Same charged objects repel Any charged objects attract any neutral charged objects. |
| What is static electricity? | Static electricity is a buildup of opposite electrical charges. |
| Current electricity is? | Electrons that are moving along a fixed path |
| What is the difference between conductors amd insulators? | Conductors allow the movment of electricity and insulators oppose the movement. |
| Are resistors the same thing as insulators? | No, Resistors allow some electricity flow whereas insulators do not allow any at all. |
| What are the definitions and unit of measurement of Current,Voltage and Resistance? | Current-rate of flow;Ampere Voltage:force of flow;volts Resistance:obtacle of flow;ohm |
| What is Ohm's law state? | Ohm's law states that there is a connection between amps, volts and ohms. |
| V=? | I•R |
| R=? | V/I |
| I=? | V/R |
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