SAT考试不仅考察考生的学术水平、学术能力与学术素质，同时还检测考生的学术态度。考生在参加SAT考试时，答错题目要扣分。下面澳际小编为大家具体介绍一道SAT2物理真题及其解法解析，希望对大家有所帮助。

　　这道SAT2物理真题相对比较简单，但是涉及到的物理知识却是比较关键的。

　　The set of lettered choices below rers to multiple questions. Select the one lettered choice that best answers each question. A choice may be used once, more than once, or not at all in each set.

　　Which graph represents the total heat developed from time

　　by a resistor carrying a steady current?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　The correct answer is A

　　Explanation

　　Difficulty: Easy

　　The correct answer is a steadily increasing amount. The rate of heat dissipation by a resistor is equal to the power it expends. The power is related to the currentand the resistance by the equation , so if the current is constant the power is constant. The total heat developed is then the power multiplied by the total time .

　　The graph is thus a steadily increasing function of time.

　　以上便是一道SAT2物理真题及其解法解析的相关介绍，非常详细，希望对大家有所帮助。想要了解更多关于SAT考试的信息，请拨打免费留学培训热线：400-601-0022，或者直接点击网页上的“在线咨询”，与我们的澳际培训专家一对一沟通交流!

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