4．電磁力と電磁誘導1（磁性体、電磁力、フレミン …

1 - 1 - (a) (b) (c) 1 1(b) (c) 1 I (a) H(A/m) B (T) (b) (a) Br HC (b) Br HC NSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNS NSNSNS( a )( b )( c ) 0 HcHBBr(a)( )I12HB1234567891011121314 HcHBBr(a)0 HBBr(b)Hc - 2 - (a) (A/m) /HNIl B(T) BH (Wb) S (m2) NISNIBSHSSNIlllS (1) 1 (b)

2 2 E (V) NI (A) I (A) (Wb) R ( ) ()mRlS (A/Wb) IER mNI R (a) (b) 312123123,,lllRRRSSS (2) R0 (A/Wb) 23122331012323R RR RR RR RRRRRRR (3) 1, 2 3 (3) 2 2333231210122331232312233123223123231223 31,,RRRRRRNININIRR RR RR RRRRRR RR RR RRRRRNIRRRRR RR RR R (4) H[A/m] [Wb]N l[m]S[m2]I[A]+-E(=NI)R(=l/ S)I(= )(a)(b) +-NI(a)(b)I[A]NR3R2R1l1l2l3S1S2S3 1 2 3 3 2 1 - 3 - 1880 J. A. 1849 1945 H.

3 A. (1853 1928) B(T) l (m) I(A) (rad) F(N) sinFBI l (5) (5) idq dt (m) , I1(A), I2(A) I1 I2 B1 (T) B2 (T) B1 B2 70(410(/))Hm 020112,22 IIBBrr (6) B1 B2 I1 I2 2 (rad) m F1 ( ) F2 ( ) (5) (6) B[T]I[A] [rad]l[m]F[N] - 4 - 02101212,22I II IFFrr [N] (7) r = 1m, I1 = I2 = 1 A 712210FF (N) m m 10-7 N l (m) F (N) x (m) WFx (J) F (N) (5) IFBIlIll xx (8) W (J) (8) WI (9) a(m) b(m) B (T)

4 (rad) I (A) a b 1[m]I1[A]I2[A]r[m]12B1[T]B2[T]F1[N]F2[N] F[N]I[A] [Wb]l[m]x[m]B[T]