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11 Cards in this Set
- Front
- Back
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variable resistor symbol |
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Buzzer symbol |
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Whta does voltage and current do in a series circuit |
Current is the same everywhere in a series circuit Voltage is split in a series circuit |
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What does voltage and current do in a parrallel circuit? |
Current is shared among paths Voltage is same along both paths |
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How is power calculated? |
P = IV |
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How is voltage calculated |
V= IΩ |
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What are elctro magnets used for |
bells motors scrapyard metal extractor |
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disadvantages and advantages of a world without electricty |
Advantages: 1. No pollution because no use for power plants. 2.More jobs as no special tools like a sewing machine exist 3. No more use of phones and techonology which are harming children. Disadvantages: Nothing which uses electricity exists anymore. No long distance communication Medicnes would not be able to be made |
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positive and negatives of extraction of iron |
Positive: can be used for ots of products and to construct buildings Disadvantages: Harms th environment |
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Dfference between corosion and metal |
Rust is a term used to describe the corrosion of iron and steel Corrosion is the desruction of any metal |
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Rusting prevention methods |
Apply paint or oi to stop air Use magnesium or zinc to stop rusting process |
