Download - 第六章 電與磁 ( 目錄 )
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()
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600
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-3
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Benjamin Franklin1706-1790(positive charge) (negative charge)
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-1
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-1
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- -0
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1. (insulator)
(conductor)
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(free electron)
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2.
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2. -1 --++
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2. -2
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2. -3 --++
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2. -4 --++
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3.
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3. -1
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-1
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6-4 -1
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- -0
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()
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-1
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- -0
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Charles Augustin de Coulomb1736-1806
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-1q 1q 2 F F
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-2r (F < 0) (F > 0)
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(coulomb) C6.251018 1.601019
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- -0
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1. ()
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1. -1
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2.
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6-8
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- -0
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6-9
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6-9
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- -0
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(electric current)
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t q
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/A
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-1/ 1 1 1 6.251018
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-1
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- -0
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1. (voltage) (volt)V
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1. -1
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6-11
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2. I V
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RI V
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-11 1 1
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- -0
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-1 direct currentDC
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-2 direct currentDC
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R
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R
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R
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R
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alternating currentAC
R
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6-19
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6-20
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- -0
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1 1 1
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-1q V (electric potential energy) U 1 1 1 U qV
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R UR
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(electric power) PI R
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P (electric power)-1 UURVR R VR IR
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P (electric power)-2 (watt) W1W 1J/s 1A-V1 1 / 1 -
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1 1 - 1000 1
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- -0
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-1
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-2
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- -0
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1 1 -1
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- -0
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800
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(magnetic pole) N S
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6-24
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- -0
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6-25a86P.154
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-1N S S N6-25b
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(magnetic field)N
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()6-25 86P.154
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- -0
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11.5
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6-26
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- -0
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(magnetic material) ()
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1820
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- -0
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N 6-28
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- -0
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(solenoid)
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-1 (electromagnet)
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(electric motor)
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(electric motor)
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- -0
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-1(secondary coil)
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-2(induced current)
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6-32 (a) ()
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6-32 (b) ()
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6-33
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- -0
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6-34 94912http://www.picture-newsletter.com/nuclear/ 94912http://www.lnzw.com.cn/PHOTO/CITY.HTM COREL PROFESSIONAL PHOTOS
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P I 2R
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-1 P I 2R P0 IV
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-2 P0 IV P I 2R
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6-34 -1 94912http://www.picture-newsletter.com/nuclear/ 94912http://www.lnzw.com.cn/PHOTO/CITY.HTM COREL PROFESSIONAL PHOTOS
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6-35
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- -0
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-1
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- -0
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110(live wire)(neutral wire)
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110 2206-36
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6-37 (a)110V
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6-37 (b)220V
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110 220 6-37 (c)
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- -0
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R1R2 R3
(parallel connection)
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6-38 (a)P P1 P2 P3I I1 I2 I3
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- -0
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(open circuit)
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-1 (fuse wire)
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-2
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- -0
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(VS) S6-41
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S IVR 6-41R I (short circuit)
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()
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- -0
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1. 2. 3. 4.
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100
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6-1
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T h e E n d
6-8
N S N N S S 6-24 N
S N 11.5()N S
(electric motor)
(electric motor)
(induced current)6-32
6-34P I2R P0 P0 IV
110 220 6-34 345 22 11
110110 6-37a 110
220 6-37b ACV 220 110
110 220 6-37c 6-40