RESEARCH ON NEW MAGNETIC LEVITATION EXPERIMENTAL DEVICE
According to the basic principle of electromagnetism,the permanent magnet or cur-rent-carrying coil will be affected by the magnetic force in the external magnetic field.When the magnetic force completely overcomes the gravity,it will reach the state of magnetic levita-tion.Based on the basic principle of magnetic levitation,we have designed a new type of mag-netic levitation device for experimental teaching,which employs a set of devices to organically combine magnetic field,current and force to realize DC and AC magnetic levitation,as well as inner and outer magnetic levitation.Using this device,experiments such as magnetic scales and magnetic ammeter based on magnetic levitation can be carried out to quantitatively explore the relationship between magnetic field,current and force.The experimental teaching device has a simple structure,low cost,and rich content,which can effectively train students'hands-on and innovative abilities,making it very suitable for promotion in college physics teaching experiments.
magnetic levitationmagnetic scalemagnetic ammeterquantitative analysis
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