重庆中学2018-2019高二(上)期中物理试题（PDF版）.pdf

1、-1-2020 110 120 8 3 24 1ABCD2ABCD e 3 ABCD EFGH ABCD EFGH P ABC 123 A C B A CD4 rA1 rA2 A2 R0-2-Ar B2rCR02r DR0r5 B rI I r ABC 3IIIAC B O AC B O B O A0 B2B CB2 DB56 L ABCD A AB D 2 AD P AD M M A D t1 P M t2 t1:t2A3:1 B3:2 C2:1 D2:37 MPQN MN=3 d MP=d m q M v0 Q E B -3-A043 v B034 v C023 v D032 v8 MNP

2、QMN PQ a BO MN O v PQ MN =60A vaB va2Cva34Dva43 8 4 32 4 2 0 9ab Aab BC ab D ab 10 ABC-4-D11 A+q F A EA=qF A A q A B A+2q A 2AEC A q D A+2q 2F12 A1 A2 V1 V2 A A1 A2B A1 A2C V1 V2D V1 V213E r R1 R3R3=rR2 R2 a S A1A2 V I1I2 U R2 b AI1I2U BI1I2U CD14 AB ab a b ABC-5-D15ABCA O FG OA OC DE DFEGBO BDE BO

3、B 1 C DE 2 3 A 2 O B 3 C C 123 322D 23 16 MN 60MN B MN a m qq0 MN b ab=L3A mqBL BmqBL33 CmqBL2 DmqBL63 14 171 1_mm 2 20 _cm-6-2 4 1k100101100 _18“3V 0.6W 3V 4.5V 0250mA 03V 3k1_A 20 1AB 1750 0.3A2_3 1.5V _W-7-4 1.5V _W 4 40 198 45 1m 2N ab 2A 12 ab 209 E=6.0V r=1.0 R2=2.0 S 1.0A 2.0V1 R1 R32 S R2-8-2110 aabbccaabb d B 2B aa PmBqd2Q bbPQ m q1 PQ cc bbcc2 bb2213 R B O MN m+q A C MN P P A AB 2R g1 E 23 P A-9-10-