用戶【明山】點評問題和點評內容

【評論主題】26 空氣中距磁極3公尺處之磁場強度爲18.99牛頓偉伯,試計算磁極的強度爲多少韋伯?(A) 2.7 x10-3 (B) 3 x10-3(C) 9 x10-3(D) 9 x10-4

【評論內容】磁場強度H=係數k*磁極強度m/距離r平方             6.33 * 10^4 * m

【評論主題】【題組】46 Which of the following statements about reflexology is true according to the passage?(A)It in

【評論內容】Unfortunately, reflexology is often mistakenly associated with foot massage

【評論主題】16.如下圖電路,10Ω電阻兩端的電位差為何?

【評論內容】解法2: 電流源(10A & 5 Ohm並聯)轉電壓源(50V & 5Ohm串聯)                                        10              2

【評論主題】11.右圖為左圖的等效電路,則電流I的值為何?

【評論內容】電壓源轉電流源