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Alevel Physic 4.1
ocr 4.1
Question | Answer |
---|---|
Charge carriers (fact) | are +/- ions or electrons in an electrolyte, electrons in a conductor |
Coulomb | the charge supplied by a current of 1 amp in 1 second |
Current | the rate of flow of charge |
Drift velocity | the average velocity of an electron when it travels through a wire due to an applied pd |
Electromotive force | the electrical energy transferred per unit charge from other forms of energy |
Kirchoffs first law (due to conservation of charge) | the total current flowing into a junction is the same as the total out. |
Ohm | a volt per amp ( VA-1) |
Ohm's Law | current through a conductor is proportional to the potential difference across it provided temperature remains constant |
Potential difference | energy transfer per unit charge from electrical to other forms |
Resistance | p.d./current |
Volt | joule per coulomb (JC-1) |