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15 Cards in this Set
- Front
- Back
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To charge an object |
Rub by friction, electrons on and off the objects. Never protons or neutrons |
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Insulator |
Doesn't pass through easily |
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Conductor |
Passes through easily |
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Voltage |
How much energy is gained or lost when a charge goes through a component. Volts. |
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Magnetic field direction |
North to south |
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Power |
Energy used per minute. Watts. |
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Power = |
Energy ÷ time |
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Power = |
Voltage × current |
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Electrostatic painting |
Nozzle gives paint droplets a negative charge. Object painted given a positive charge. Attractive force. Smooth even coverage, minimises time consuming work |
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Electrostatic precipitators (air filters) |
Negatively charged wire in middle of chimney. Smoke particles gain negative charge. Attractive to positively charged plates on the side of chimney Lose charge and drop into collecting trays. Gas escapes chimney and smoke and dust particles removed |
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Series- voltage |
Splits between number of bulbs |
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Parallel- voltage |
Stays same for each branch, splits between bulbs on one branch |
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Series- current |
Stays same through whole circuit |
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Parallel- current |
Splits between branches |
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Earthing |
Removes excess charge as they run into the ground |
