1、 (1 3 4 5 ) 1 09152102 ( C ) C 2 ( 2015 2016 ) AB 09152103 ( A ) A B C D A B C D 3 ( 2014 2015 ) MN ( ) MN 09152104 ( B ) MN MN A MN v t B C MN v t D B 4 ( 2015 2016 ) n 100 S 50cm 2 r 0.1s 09152105 ( BD ) A 0.25Wb B 2 Wb/s C a b 0 D a b 0.25A 2 B2S B2S ( B1S) (0.1 4 Wb 3 Wb A t 3 0.1 Wb/s 2 Wb/s B
2、a b E n t 2.5V C a b a b I E r 0.25A D 5. 09152106 ( BD ) A B C D A B C D 6 ( 2015 2016 ) (a) L 0.4m R abcd b d L 0 B t (b) 1s v 1m/s 09152107 (1) E (2) F abd i t (1)0.04V (2)0.04N i (t t (1) E t B S t 2 2 2 1 V 0.04V (2) F BIL B BLv R L B 2 L 2 v R t 1 s B 0.5T v 1m/s R L F L 0.4m Fmax 0.04N abd L
3、2v t 1) E BLv i E R 1s 1.2s i BLv R (t 1)A t (1 3 4 6 ) 1 ( 2014 2015 ) r B q B k 09152108 ( D ) A 0 B 1 2 r 2 qk C r 2 qk D r 2 qk E B t S E k r 2 W qE r 2 qk D 2 a b a B1 B2 B2B1 b B1 B2 a b 09152109 ( A ) A a b B a b C a b D a b a b A 3 ( 2015 2016 ) B t 09152110 ( B ) E n t ns B t B t 0 2s 2 4s
4、ACD B B 4 ( ) MN ( ) MN MN i t ( ) 09152111 ( BC ) E BLv R I E R BLv R B v R L L L t L L A L B L C L D 5 ( 2015 2016 ) 09152112 ( ACD ) A ab B ab C D A (E) 4r( r) I E 4r B ab Uab I r 3 4 E Uab I r 1 4 E B q n R C P Fv BILv I P D 6. L m ab cd 2R B ab F v1 cd v2 g 09152113 ( AD ) A ab F B 2 L 2 v1 2RB
5、 cd C BL v1 v2 2RD v1 2Rmg B 2 L 2 v1 ab v1 E1 BLv1 cd E2 0 I E1 2R BLv1 2R C a b d c a ab cd ab F F B 2 L 2 v1 2R A cd mg B 2 L 2 v1 2R 2Rmg B 2 L 2 v1 B D 7 ( 2014 2015 ) L 1m xOy R x0 B t B kt k 4T/s m 0.5kg t 0 x 0 F a 2m/s 2 x R t 4s 09152114 513N t 4s x 1 2 at 2 1 2 16m v at 8m/s E1 BLv ktLv 128V E2 B t Lx 64V E E1 E2 192V I E R 192 6 A 32A F BIL ma F BIL ma 513N
