2.4 Electricity and Magnetism 2.4.6 Sources of Magnetic Field
P2430760
Ferromagnetic hysteresis with Cobra4
Details
Principle A magnetic field is generated in a ring-shaped iron core by a continuous adjustable direct current applied to two coils. The field strength Η and the flux density B are measured and the hysteresis recorded. The remanence and thecoercive field strength of two different iron cores can be compared.
What you can learn about ■■ Induction ■■ Magnetic flux ■■ Magnetic field of coils ■■ Magnetic and coercive field strength ■■ Remanence
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Tasks Record the hysteresis curve for a massive iron core and for a laminated one.
Benefits ■■ Simple experimental setup and intuitive handling of the software: Better results in less time ■■ Added value due to the use of datalogging: Direct visualisation of the learning objective
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