中国大学MOOC: 如图所示,载流的矩形平面线框通有电流I,处在匀强磁场中,磁感应强度http://edu-image.nosdn.127.net/_PhotoUploadUtils_69bc4a0a-7c60-498c-9704-0f4a8d8a117f.png的方向与线框平面平行,则线框受到的磁力矩的方向是[ ]。http://edu-image.nosdn.127.net/03B728CFAAB66662FBF421D61DD849F1.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100
举一反三
- 中国大学MOOC: 如图所示,一根载流导线被弯成半径为R的1/4圆弧,放在磁感应强度为http://edu-image.nosdn.127.net/_PhotoUploadUtils_474b20cd-d003-45f7-8917-78b0810d8a75.png的匀强磁场中,http://edu-image.nosdn.127.net/_PhotoUploadUtils_c9370bcc-b246-46f7-a5ab-a59cedc9b082.png的方向垂直于导线所在平面,则载流导线ab所受磁场的作用力的大小和方向为[ ]。http://edu-image.nosdn.127.net/E28E450624F1969DBE71762FF852CC06.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100
- 中国大学MOOC: 如图所示,将一均匀分布着电流的无限大载流平面放入均匀磁场中,电流方向与该磁场垂直。现已知载流平面两侧的磁感应强度大小分别为http://edu-image.nosdn.127.net/_PhotoUploadUtils_746f3891-a3b2-4661-9f83-3f2968611f49.png和http://edu-image.nosdn.127.net/_PhotoUploadUtils_3b881e6b-9afe-42b3-8d23-1750bdcce082.png,则该载流平面上的电流密度http://edu-image.nosdn.127.net/_PhotoUploadUtils_4bfb4765-c735-433c-bb9c-f24f015f2524.png为[ ]。http://edu-image.nosdn.127.net/2B41897924B757CB675DEEE796153477.png?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 如图所示,网孔I的网孔电流法方程应为( )http://edu-image.nosdn.127.net/38E38CF64EC070E95E47B1FB7F977634.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/43A73C3A226230A96E5C62EDD9D4EBE8.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100
- [img src="http://edu-image.nosdn.127.net/E9ECD91FC8FB3437CBAE9E731E05C1F9.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"] 未知类型:{'options': ['[img src="http://edu-image.nosdn.127.net/844D4F13280FCB22936CC001C2655964.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]', '0', '1', '[img src="http://edu-image.nosdn.127.net/39355C3F2BE9AE15346505596CAABAF4.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]'], 'type': 102}
- 中国大学MOOC: 如图所示,匀强磁场中一矩形通电线圈,它的平面与磁场平行,在磁场的作用下,线圈发生转动,其方向是:[ ] http://edu-image.nosdn.127.net/4B596726911017579B3B56AFB84E81F3.png?imageView&thumbnail=890x0&quality=100