Objective: Measurement of the force exerted on a current-carrying conductor located inside a magnetic field
The electric balance is based on André-Marie Ampères’ experiments on electric current. It measures the electro-dynamic force sometimes referred to as the Lorentz force on a current carrying conductor situated in a magnetic field using a balance. In this experiment the current conductor is suspended from a rigid suspension system and exerts the equal and opposite force on the permanent magnets as the electro-dynamic force generated by the magnetic field. The result is the apparent change in weight of the permanent magnets.
![Experiment: Electric Balance (230 V, 50/60 Hz), 8000763 [UE3030350-230], Magnetic fields](/imagelibrary/UE3030350-230/UE3030350-230_01_Experiment-Electric-Balance-230-V-5060-Hz.jpg)
![Experiment: Electric Balance (230 V, 50/60 Hz), 8000763 [UE3030350-230], Magnetic fields](/thumblibrary/UE3030350-230/UE3030350-230_01_1200_1200_Experiment-Electric-Balance-230-V-5060-Hz.jpg)
![直流电源, 0-20 V, 0-5 A
, 1003312 [U33020-230], 供电器](/thumblibrary/U33020-230/U33020-230_01_140_140_直流电源-0-20-V-0-5-A.jpg)
![双联式三脚架座, 1002835 [U13270], 基底](/thumblibrary/U13270/U13270_01_140_140_双联式三脚架座.jpg)
![成对安全实验导线，75cm, 2,5 mm², 1017718 [U13816], 实验用导线和电缆](/thumblibrary/U13816/U13816_01_140_140_成对安全实验导线-75cm-2-5-mm.jpg)
![Double-Pole Double Throw Switch, 1018439 [U8495901], 电循环](/thumblibrary/U8495901/U8495901_01_140_140_Double-Pole-Double-Throw-Switch.jpg)
![不锈钢杆250 mm, 1002933 [U15001], 杆](/thumblibrary/U15001/U15001_01_140_140_不锈钢杆250-mm.jpg)
![两根实验导线，75 cm, 2.5 mm², 1002850 [U13813], 实验用导线和电缆](/thumblibrary/U13813/U13813_01_140_140_两根实验导线-75-cm-25-mm.jpg)
![电流天平实验装置, 1021822 [U20615], 磁场中的电导体](/thumblibrary/U20615/U20615_01_140_140_电流天平实验装置.jpg)
![电子秤 SKX 420g, 1020859 [U42066], 实验室规模](/thumblibrary/U42066/U42066_01_140_140_电子秤-SKX-420g.jpg)
![15根安全实验导线套件，75mm, 1002843 [U138021], 电循环](/thumblibrary/U138021/U138021_01_140_140_15根安全实验导线套件-75mm.jpg)
![功率函数生成器（230 V，50/60 Hz）, 1009957 [U8533600-230], 信号函数发生器](/thumblibrary/U8533600-230/U8533600-230_01_140_140_功率函数生成器-230-V-5060-Hz.jpg)
![通用夹, 1002830 [U13255], 夹具](/thumblibrary/U13255/U13255_01_140_140_通用夹.jpg)
![袖珍型测量带，2米, 1002603 [U10073], 长度测量](/thumblibrary/U10073/U10073_01_140_140_袖珍型测量带-2米.jpg)
![高频接插线,BNC/4毫米插头, 1002748 [U11257], 实验用导线和电缆](/thumblibrary/U11257/U11257_01_140_140_高频接插线-BNC4毫米插头.jpg)
![一套接插线，15个，长度 75 cm, 1002840 [U13800], 电循环](/thumblibrary/U13800/U13800_01_140_140_一套接插线-15个-长度-75-cm.jpg)
![模拟万用表ESCOLA 30, 1013526 [U8557330], 手持模拟测量仪器](/thumblibrary/U8557330/U8557330_01_140_140_模拟万用表ESCOLA-30.jpg)
![数字万用表 P1035, 1002781 [U11806], 手持数字测量仪器](/thumblibrary/U11806/U11806_01_140_140_数字万用表-P1035.jpg)
![PC-示波器 2x25 MHz, 1020857 [U11830], 高阶示波器](/thumblibrary/U11830/U11830_01_140_140_PC-示波器-2x25-MHz.jpg)
![Set of apparatus for Displaying Magnetic Fields, 1000925 [U8491790], 磁场](/thumblibrary/U8491790/U8491790_01_140_140_Set-of-apparatus-for-Displaying-Magnetic-Fields.jpg)
![静电计(230 V, 50/60 Hz), 1001025 [U8531408-230], 静电学](/thumblibrary/U8531408-230/U8531408-230_01_140_140_静电计-230-V-5060-Hz.jpg)
![静电计配件, 1006813 [U8531420], 静电学](/thumblibrary/U8531420/U8531420_01_140_140_静电计配件.jpg)