Question

diagram of lines of force of the magnetic field of bar magnet

Answer 1

this is the diagram. ...

Answer 2

$\setlength{\unitlength}{1.29mm}\begin{picture}(30,20)\linethickness{6.7mm}\put(0,0){\line(1,0){16}}\linethickness{0.4 mm}\put(0,-3){\line(1,0){30}}\put(0,3){\line(1,0){30}}\put(0,-3){\line(0,1){6}}\put(30,-3){\line(0,1){6}}\large{\put(26,-1.2){ \bf{N} }}\linethickness{0.1 mm}\put(0,0){\line(-1,0){12}}\put(30,0){\line(1,0){12}}\put(-12,0){\vector(1,0){6}}\put(30,0){\vector(1,0){6}}\put(-12,0){\vector(1,0){3}}\put(30,0){\vector(1,0){3}}\thinlines\qbezier(0,1)(-5,2)(-12,6)\qbezier(0,-1)(-5,-2)(-12,-6)\qbezier(0,2)(-5,4)(-12,12)\qbezier(0,-2)(-5,-4)(-12,-12)\qbezier(30,1)(35,2)(42,6)\qbezier(30,-1)(35,-2)(42,-6)\qbezier(30,2)(35,4)(42,12)\qbezier(30,-2)(35,-4)(42,-12)\qbezier(0,3)(-10,12)(5,20)\qbezier(30,3)(40,12)(25,20)\qbezier(5,20)(15,24)(25,20)\qbezier(0,-3)(-10,-12)(5,-20)\qbezier(30,-3)(40,-12)(25,-20)\qbezier(5,-20)(15,-24)(25,-20)\qbezier(2,3)(-3,6)(5,12)\qbezier(28,3)(33,6)(25,12)\qbezier(5,12)(15,18)(25,12)\qbezier(2,-3)(-3,-6)(5,-12)\qbezier(28,-3)(33,-6)(25,-12)\qbezier(5,-12)(15,-18)(25,-12)\qbezier(3,3)(1.5,4)(4,6)\qbezier(27,3)(28.5,4)(26,6)\qbezier(4,6)(15,12)(26,6)\qbezier(3,-3)(1.5,-4)(4,-6)\qbezier(27,-3)(28.5,-4)(26,-6)\qbezier(4,-6)(15,-12)(26,-6)\put(15,22){\vector(-1,0){2}}\put(15,15){\vector(-1,0){2}}\put(15,9.01){\vector(-1,0){2}}\put(15,-22){\vector(-1,0){2}}\put(15,-15){\vector(-1,0){2}}\put(15,-9.01){\vector(-1,0){2}}\end{picture}$