핵심물리학2 전기파트 21단원 레포트답안

핵심물리학2 전기파트 21단원 레포트답안

핵심물리학2 전기파트 21단원 레포트답안.doc

본문 EXERCISES Section 21.1 Electric Field Lines 18. The number of lines of force emanating from (or terminating on) the positive (or negative) charges is the same (14 in Fig. 21.31), so the middle charge is and the outer ones are The net charge shown is therefore This is reflected by the fact that 14 lines emerge from the boundary of the figure. 19. INTERPRET This problem is about drawing field lines to represent the field strength of a charge configuration. DEVELOP We follow the methodology illustrated in Figure 21.3. There are 16 lines emanating from charge +2q (eight for each unit of +q). Similarly, we have 8 lines ending on EVALUATE The field lines of the charge configuration are shown below. ASSESS Our sketch is similar to Fig. 21.3 (f) with twice the number of lines of force. 20. (The sketch shown follows the text's convention of eight lines of force per charge magnitude q.) 21. INTERPRET In this problem we are asked to identify the charges based on the pattern of the field lines. DEVELOP From the direction of the lines of force (away from positive and toward negative charge) one sees that A and C are positive and B is a negative charge. Eight lines of force terminate on B, eight originate on C, but only four originate on A, so the magnitudes of B and C are equal, while the magnitude of A is half that value. EVALUATE Based on the reasoning above, we may write The total charge is so ASSESS The magnitude of the charge is proportional to the number of field lines emerging from or terminating at the charge. 하고 싶은 말 좀 더 업그레이드하여 자료를 보완하여, 과제물을 꼼꼼하게 정성을 들어 작성했습니다. 위 자료 요약정리 잘되어 있으니 잘 참고하시어 학업에 나날이 발전이 있기를 기원합니다 ^^ 구입자 분의 앞날에 항상 무궁한 발전과 행복과 행운이 깃들기를 홧팅 키워드 단원, 핵심, 레포트답안, 전기파트, 핵심물리학, 물리학