barron sat 物理题BARRON'S SAT 物理 第10页(Diagnostic test 第15题)The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:(A)3 m of nichrome wire(B)3 m of copper wire(C)

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/10 17:54:20
barron sat 物理题BARRON'S SAT 物理 第10页(Diagnostic test 第15题)The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:(A)3 m of nichrome wire(B)3 m of copper wire(C)

barron sat 物理题BARRON'S SAT 物理 第10页(Diagnostic test 第15题)The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:(A)3 m of nichrome wire(B)3 m of copper wire(C)
barron sat 物理题
BARRON'S SAT 物理 第10页(Diagnostic test 第15题)
The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:
(A)3 m of nichrome wire
(B)3 m of copper wire
(C)3 m of lead wire
(D)3 m of steel wire
(E)3 m of iron wire
14.In which length of wire is the current greatest
15.Which length of wire generates the greatest power?
答案：
14 B Copper has the least resistance of all the metals listed and therefore the greatest current.
15题答案选A,理由是:
Nichrome has the highest resistance of all the metals listed. Since power is proportional to resistance, nichrome generates the greatest power.
但我认为既然14题选b,15也应该选B..这里似乎应该使用P=U^2/R

barron sat 物理题BARRON'S SAT 物理 第10页(Diagnostic test 第15题)The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:(A)3 m of nichrome wire(B)3 m of copper wire(C)
两个 都选B 用应该用p=U*I 电压相等 电阻越大电流越小 copper的电阻最小 电流最大 所以 功率最大

其实楼主 巴朗SAT上是有挺多错题的

SAT barron 3500,感激不尽! SAT Barron 3500核心词汇 求sat barron 800单词! 急需sat的Barron词汇3500! barron's sat 和barron't sat 2400有何不同? 急需,北京地区哪里有卖《Barron 3500 words for SAT》 和《SAT Barron 800词汇表》 请问一下,sat单词背barron+猴哥好还是barron+红宝? sat 准备书籍《barron's sat 2400》和《barron'sat》(就是200多块的那本)我都要买么? 买SAT suject test：Math Level 2,Barron还是Kaplan? SAT参考书Barron不需要备考部分有哪些 sat 的填空题只要把BARRON背完就可以吗? SAT参考书Barron不需要备考部分有哪些 备考SAT,Barron‘s2400、princetonSAT11套哪个好 Barron's SAT的书新旧版本有影响吗?同时准备TOEFL SAT需要哪些书?Barron's SAT Subject Test Math Level 1需要买吗 sat 单词选择什么比较好呢Barron 3500小红宝 SAT或者其他 BARRON 巴郎是什么 barron's how to prepare for the sat和barron's 2009 24th edition哪个好?急如题~barron's 2009 24th edition白色cover 是 barron's how to prepare for the sat 黄色cover的新版本么?那么Barron's SAT 2400-aiming for the perfect score有如何 Barron SAT书上模拟题的难度我做了Barron的SAT综合指导和模拟试题,很想知道题和真题的难度相比如何?