1、 (1 4 5 6 ) 1 ( 2014 2015 ) 09152210 ( C ) C 2 ( 2015 2016 ) S B e sin 09152211 ( A ) A e sin BCD A BCD A 3 ( 2014 2015 ) 09152212 ( C ) A B C ab a b D ab ab a b ab cd 4 ( 2014 2015 ) abcd ab ab t 0 ( ) cd a b c d a I t 09152213 ( C ) C 5 e t)V 09152214 ( AB ) A t 0 B t 0 C t 0 D t 0.4s e 10 2V t 0
2、A B C t 0.4s e t) 0 D 6 ( 2014 2015 ) abcd P1 P2 09152215 ( AC ) A P1 P2 B P1 P2 C P1 P2 a d c b D P1 dc P2 dc E Em I E R I A B a d c b C cd F BLcdI F D 7 ( 2014 2015 ) 10 20cm OO rad/s 0.5T 09152216 (1) (2) (3) (1)6.28V 6.28A (2)5.44V (3)e t(V) (1) Em 2 6.28V Im Em/R 6.28A (2) E Em 5.44V (3) e Emsi
3、n t(V) (1 3 4 5 ) 1 09152217 ( B ) A 2B 2 C D 2 1 BS ( BS) 2BS E N t 2NBS 2 Em 2 2 N S M M e t 09152218 ( D ) D 3. abcd cd t 0 T cd abcda t 0 t T i t 09152219 ( B ) t 0 i 0 C D t 0 T 4 adcba A B 4 ( 2015 2016 ) t 09152220 ( AC ) A t 0 B t 2 s C 2 s D 0 2 s t 0 A t 2 s B t 2 s C 0 2 s E t 2 m 2 s D 5 09152221 ( BC ) A t 0 B t 0.01s C t 0.02s D t 0.025s msin e Emcos t 0 0 0.01s 0.02s 0.03s t 0.025s B C 6 ( 2015 2016 ) B 0.5T n 50 0.48m 2 150rad/min 09152222 (1) (2) e t (1)e t(V) (2) (1) t e Emsin Em n 50 B 0.5T 60 rad/s S 0.48m 2 Em e t(V) (2) T T 0.4s e t
