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Physics Review Question Unit: Electricity & Magnetism Year: 1988 Question#: 29 Question: The ratio of the potential difference across a conductor to the current in the conductor is called (1 ) Conductivity (2 ) Resistance (3 ) Charge (4 ) Power What is this question really asking? Explanation by: Yui H. [ Return to question menu ] Answer 1 Conductivity Incorrect This answer is incorrect because conductivity is the amount of electrons that move within the material. Its not the ratio of the potential difference across a conductor to the current in the conductor. return to top Answer 2 Resistance Correct This answer is correct because The formula states that resistance = potential difference / current This is the ratio of the potential difference across a conductor to the current. return to top Answer 3 Charge Incorrect This answer is incorrect because charge in this case is electrons and its determined by the amount of current in a given time. This is not the ratio of potential difference across a conductor to the current. return to top Answer 4 Power INCORRECT This answer is incorrect because Power = Potential difference multiplied by the current. This is not the ratio of potential difference across a conductor to the current. return to top What's this question really asking? What is V/I? return to top |
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