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。下面新航道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 refers 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，请多多关注新航道官网，更多关于SAT2物理真题的内容为您分享。 |