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17 Cards in this Set
- Front
- Back
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Law of conservation of charge |
In an isolated system, charge is constant |
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Electric field |
An area region where charge feels a force |
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Electric field strength |
E- the force per unit charge on a small positive test charge at that point |
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Electrical potential |
V- the work done per unit charge on a small positive test charge moving from infinity to that point |
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Electronvolt |
The energy gained by an electron when it moves through a potential difference of one volt |
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Current |
The rate of flow of charge The number of coulombs passing a point per second |
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Kirchoff's 1st law |
The total current flowing towards a junction is equal to the total current flowing out of that junction |
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Volt |
Joule per coulomb |
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Kirchoffs 2nd law |
The sum of the emfs in any closed loop is equivalent to the sum of the potential drops in that loop |
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Electric potential difference |
Between 2 points is the work done per unit charge to move a small positive charge between 2 points |
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Electromotive force emf |
The total energy difference per unit charge around the circuit The potential difference when no current flows |
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Resistance |
The ratio between the potential difference across a component and the current through it |
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Ohms law |
When the temperature is kept constant, the current through a metallic conductor is proportional to the potential difference across it |
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Power |
The amount of energy transferred by a device per second |
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Magnetic field |
An area region where another magnet, a magnetic material or a moving charge feels a force (B) |
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Magnetic field |
An area region where another magnet, a magnetic material or a moving charge feels a force (B) |
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Motor effect |
When a current is placed in a magnetic field it will experience a force |
