2106776
Description
Flashcards by paigeysonghurst, updated more than 1 year ago
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Created by paigeysonghurst
over 9 years ago
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| Question | Answer |
| Dangers of static electricity | -explosions Fuel out of a filler pipe builds up a static. Leads to a spark. Explodes in a dusty fumey place. |
| Uses of static electricity | -electrostatic spray paint Spray gun charged, charges paint. Paint repels eachother=fine spray. Object is opposite charge attracts all paint. -even coat -not much waste paint -paints all object even when facing away from spray. |
| How to prevent electrostatic charge building up? | -Earth objects Connects charged object to ground. Easy oute for static charges. No charge build up. Electrons go up=Positive charge Electrons go down=Negative charge |
| Current? | -Rate of flow of charge round the circuit. Current will only flow if there is a voltage across that component. |
| Voltage | (potential difference)Driving force that pushes current around. |
| Resistance? | Anything in circuit which slows flow down. |
| There is a balance? | Voltage trying to push the current around the circuit. Resistance opposing it. Relative size of voltage and resistance decide how big the current. |
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