Physics Review Question Unit: electricity Year: 1987 Question#: 9 Question: Which condition must exist between two points in a conductor in order to maintain a flow of charge? (1 ) A potential difference (2 ) A magnetic field (3 ) A low resistance (4 ) A high resistance What is this question really asking? Explanation by: John D (no last names) [ Return to question menu ] Answer 1 A potential difference CORRECT Answer 1 is correct because all electric currents need a reason to flow. return to top Answer 2 A magnetic field INCORRECT Answer 2 is incorrect because a magnetic field is not needed to maintain a flow of charge. return to top Answer 3 A low resistance INCORRECT Answer 3 is incorrect because a low resistance does affect the flow of charge but current can still flow with or without it. return to top Answer 4 A high resistance INCORRECT Answer 4 is incorrect because a charge can still flow with a high resistance. return to top What's this question really asking? This question is really asking what is the condition necessary to maintain a flow of charge. return to top |
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