Instruction Manual and Experiment Guide BASIC CURRENT BALANCE AND CURRENT BALANCE ACCESSORY SF-8607 Basic Current Balance SF-8608 Current Balance Accessory Shanghai JiaoTong University Center of Physics Experiment
Instruction Manual and Experiment Guide BASIC CURRENT BALANCE AND CURRENT BALANCE ACCESSORY Shanghai JiaoTong University Center of Physics Experiment
Table of contents Section Page Introduction......... Equipment.………… Operation..... Experiment Experiment 1:Force versus Current..................................... Experiment2:Force versus Length ofWire........................ Experiment 3:Force versus Magnetic Field................... Experiment 4:Force versus angle... Maintenance...…....….…
Table of contents Section Page Introduction…………………………………………………………….. Equipment ….…………….………………………………………….… Operation……………….………………………………………….…... Experiment Experiment 1: Force versus Current……………………………….. Experiment 2: Force versus Length of Wire………………….…… Experiment 3: Force versus Magnetic Field……………...……….. Experiment 4: Force versus angle………..……………………….. Maintenance……………………………………………………………
Introduction A current-carrying wire in a magnetic field experiences a force that is usually referred to as a magnetic force.The magnitude and direction of this force depend on four variables:the magnitude of the current (D);the length of the wire(L);the strength of the magnetic field(B);and the angle between the field and the wire(). This magnetic force can be described mathematically by the vector cross product: Fm=ILXB, or in scalar terms, Fmr =ILBsin 0 With the PASCO SF-8607 Basic Current Balance,you can vary three of the variables in the equation-the current,the length of the wire,and the strength of the magnetic field-and measure the resulting magnetic force.By adding the SF-8608 Current Balance Accessory,you can also vary the angle between the wire and the magnetic field,thereby performing a complete investigation into the interaction between a current carrying wire and a magnetic field. This manual supplies general operating instructions for both the SF-8607 Basic Current Balance and the SF-8608 Current Balance Accessory.Step-by-step instructions for four experiments are also included
1 Introduction A current-carrying wire in a magnetic field experiences a force that is usually referred to as a magnetic force. The magnitude and direction of this force depend on four variables: the magnitude of the current (I); the length of the wire (L); the strength of the magnetic field (B); and the angle between the field and the wire (θ). This magnetic force can be described mathematically by the vector cross product: Fm = ILXB, or in scalar terms, Fm. = ILBsinθ. With the PASCO SF-8607 Basic Current Balance, you can vary three of the variables in the equation—the current, the length of the wire, and the strength of the magnetic field—and measure the resulting magnetic force. By adding the SF-8608 Current Balance Accessory, you can also vary the angle between the wire and the magnetic field, thereby performing a complete investigation into the interaction between a current carrying wire and a magnetic field. This manual supplies general operating instructions for both the SF-8607 Basic Current Balance and the SF-8608 Current Balance Accessory. Step-by-step instructions for four experiments are also included
Equipment The SF-8607 Basic Current Balance Your SF-8607 Basic Current Balance includes the items shown in Figure 1: ·Main Unit, six Current Loop PC boards; Magnet Assembly with six magnets. Additional Equipment Needed: In addition to the included equipment,you will need the following items to perform the experiments in this manual: DC power supply capable of supplying up to 5 A such as the PASCO Model SF-9584. DC ammeter capable of measuring up to 5 A such as the PASCO Model SB-9624. Balance capable of measuring forces with an accuracy of 0.01 gram mass equivalent.The balance can be either a quadruple beam balance,such as the PASCO Model SE-8725,or an electronic top loading balance such as the PASCO Model SE-8709. Lab stand such as the PASCO Model ME-9355. Hook-up wires with banana plug connectors such as the PASCO Models SE-9750(red)and SE-9751(black). Main Unit Magnet Assembly Current Loops Figure 1 Equlpment Included with the SF-8607 Basic Current Balance. The SF-8608 Current Balance Accessory Your SF-8608 Current Balance Accessory includes the items shown in figure 2: the Current Balance Accessory Unit ·Magnet Assembly. Additional Equipment Needed: The Main Unit from the SF-8607 Basic Current Balance plus additional equipment as listed 2
2 Equipment The SF-8607 Basic Current Balance Your SF-8607 Basic Current Balance includes the items shown in Figure 1: Main Unit; six Current Loop PC boards; Magnet Assembly with six magnets. Additional Equipment Needed: In addition to the included equipment, you will need the following items to perform the experiments in this manual: DC power supply capable of supplying up to 5 A such as the PASCO Model SF-9584. DC ammeter capable of measuring up to 5 A such as the PASCO Model SB-9624. Balance capable of measuring forces with an accuracy of 0.01 gram mass equivalent. The balance can be either a quadruple beam balance, such as the PASCO Model SE-8725, or an electronic top loading balance such as the PASCO Model SE-8709. Lab stand such as the PASCO Model ME-9355. Hook-up wires with banana plug connectors such as the PASCO Models SE-9750 (red) and SE-9751 (black). The SF-8608 Current Balance Accessory Your SF-8608 Current Balance Accessory includes the items shown in figure 2: the Current Balance Accessory Unit Magnet Assembly. Additional Equipment Needed: The Main Unit from the SF-8607 Basic Current Balance plus additional equipment as listed
above under additional equipment for the SF-8607. Magnet Assembly Current Balance Accessory Unit Flgure 2 Equlpment Included with the SF-8608 Current Balance Accessory. 3
3 above under additional equipment for the SF-8607