Experimental apparatus for demonstrating movement rule of charged particle in uniform magnetic field

Abstract

The invention discloses an experimental apparatus for demonstrating the movement rule of a charged particle in a uniform magnetic field. The experimental apparatus comprises a power supply unit, a current reversing unit and an electrolytic bath, wherein the electrolytic bath comprises a water tank containing electrolyte and an annular coil arranged below the water tank; the coil is externally connected with exciting current to generate a magnetic field; a first electrode is arranged at the middle part of the water tank; a metal ring arranged in the water tank along the inner wall is a second electrode, and the first electrode and the second electrode are respectively connected with the power supply unit. According to the experimental apparatus, the movement rule of the charged particle in the magnetic field is visually and intuitively demonstrated; the interestingness is also increased, and the interest of a student to learn science is stimulated. The apparatus is low in cost, simple to manufacture, simple in operation and obvious in effect. The apparatus can explain the electrical conductivity of the electrolyte solution and the characteristics that freely moving cation and anion, electric field and magnetic field in the internal part have the effect of force and acting force on the charged particle, and the movement rule of the charged particle in the magnetic field can be visually and intuitively demonstrated.

Description

technical field [0001] The invention relates to a demonstration instrument, in particular to an experimental device for demonstrating the movement law of charged particles in a uniform magnetic field. Background technique [0002] Because the movement of charged particles often involves the movement of microscopic particles, it is difficult to use suitable experimental demonstration devices to display intuitively and vividly. The traditional method often uses cloud chambers to display the movement trajectories of particles, which is not only useful for experiments The equipment requirements are very high, and it needs to be cumbersome to explain before the demonstration, and the phenomenon is not vivid and intuitive enough. Another way is to use a cathode ray tube as a test device for demonstrating the acceleration of a charged body, but it can only allow us to observe the electron beam. The track on the fluorescent screen is used to experience the process of electrons being...

AI Technical Summary

Problems solved by technology

The device overcomes the defect that the existing experimental device cannot macroscopically observe the movement of the charged body

Images