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Ampere loop theorem experimental instrument and measuring method thereof

An ampere loop and experimental instrument technology, applied in the field of electrical engineering teaching instruments and electromagnetism, can solve the problems that students are not easy to understand and master, abstract concepts are difficult, etc., and achieve a good intuitive effect.

Inactive Publication Date: 2005-03-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the concept is abstract and difficult to explain, and it is difficult for students to understand and master

Method used

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  • Ampere loop theorem experimental instrument and measuring method thereof
  • Ampere loop theorem experimental instrument and measuring method thereof

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Embodiment

[0026] The present invention has simple structure, convenient manufacture, such as figure 1 shown. It consists of a power coil 1, a detection coil 2 and a projection millivolt meter 3. The power supply coil 1 is composed of two or more current-carrying wire frames, and the wire frames are connected in parallel to the low-voltage end of the power transformer 4. The detection coil 2 is composed of enameled wires tightly wound on the flexible hose of non-magnetic material. The two ends of the detection coil are used The shielding wire is connected to the projection millivolt meter 3, and the ground terminal of the projection millivolt meter is connected to the sheath of the shielding wire. The power coil 1 is composed of two wooden rectangular wire frames A and B. 45 turns of enameled wire with a diameter of 0.67 mm are used in the wire frame, and the two wire frames are connected in parallel to the low-voltage end of the transformer, and powered by 6V AC. The detection coil 2...

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Abstract

The instrument comprises the source coil (1), the detecting coil (2) and the projection milivoltmeter (3). The source coil composed of two or more than two current carrying wire frames is connected to the low end of the power transformer. The detecting coil composed of enameled wires being wrapped densely on flexible tube made from non-magnetic material is connected to the projection milivoltmeter. The shielded wire on the two ends of the detecting coil is connected to the ground terminal of the milivoltmeter. Line integral of magnetic induction H along any closed curve L is proportion to algebraic sum of current encircled by the closed curve. Ampere circuital theorem is proved by the experiment. The invention can give the demo for 200 students in classroom, providing good intuitionistic effect.

Description

1. Technical field [0001] The invention relates to an experimental instrument for verifying the ampere loop theorem and a testing method thereof, belonging to the field of teaching instruments for electromagnetism and electrotechnical science. 2. Background technology [0002] The Ampere loop theorem is a theorem that expounds the quantitative relationship between the circulating current of the magnetic field and the algebraic sum of the surrounding conduction current. According to the requirements of the teaching syllabus, this theorem is an important content of the electromagnetic field theory, and students must master it. But for decades, teaching verification in this area has been indirectly proved by mathematical methods. From the perspective of physical science, the theory should be directly proved by experiments, but so far there is still a lack of experimental instruments in this area at home and abroad. Therefore, the concept is abstract and difficult to explain, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/18
Inventor 叶瑞英
Owner SICHUAN UNIV