Magnetic field is such force field which affects moving electric charges. It can create current of charged particles. Force of magnetic field or as it is called still, Lorentz force, find on the formula of the same name.
It is required to you
- Sheet of paper, handle, calculator, measuring devices
Instruction
1. Study a formula of Lorentz, the outstanding Dutch physicist. According to it, force operating on charged particles it is equal to the work of speed of a particle on magnetic induction of the field increased by a particle charge. Speed of a particle is the vector size which characterizes that, the material point in space how fast moves and moves. Magnetic induction of the field represents power characteristic of magnetic field. The particle charge, or electric charge, defines ability of bodies to be a part of electromagnetic interaction.
2. Find the data specified in a formula for finding of force of magnetic field. To find the speed of charged particle, it is necessary to know the radius of its movement and induction of magnetic field. For finding of magnetic induction such magnetometer as to teslametra is used. Having used this device, it is possible to receive one value substituted in a formula, and the second, having carried out some calculations. To measure electric charge, use the electrometer. This device consists of a core and an arrow rotating around the axis located horizontally. Both the core, and an arrow are fixed in the sleeve and placed in the metal casing which is closed by glass covers.
3. Take necessary measurements and calculations. During the work with measuring devices be careful and observe security measures. For carrying out calculations use the calculator, and write out all data on the sheet of paper. When you finish with preliminary calculations, check the work. The more precisely there will be your actions, the answer will be more correct. Besides, to take measurements with use of devices is twice one better to exclude a mistake. Substitute the obtained data in a formula and make calculations.