Experimental device for Faraday law of electromagnetic induction

• Main Authors: FANG QING'AN, ZHANG CHENGZU
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2019
• Subjects: ADVERTISING; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CRYPTOGRAPHY; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; GLOBES; PHYSICS; PLANETARIA; SEALS

The utility model discloses an experimental device for a Faraday law of electromagnetic induction. The experimental device comprises a variable-frequency power supply for teaching, a vibrating table for teaching, a strong magnet, a square coil and an oscilloscope for teaching, the variable-frequency power supply for teaching selects proper alternating-current voltage and frequency to supply powerto the vibrating table for teaching. The strong magnet fixed on the vibration table shaft for teaching can vibrate up and down; the magnetic flux phi in the square coil is periodically changed; the delta phi is determined by the amplitude of the strong magnet; wherein delta t is determined by the vibration frequency (f = 1/T) of the strong magnet, the induced electromotive force E = n delta phi/delta t is also changed along with the change of the amplitude or the frequency, and the magnitude and the direction of the induced electromotive force are judged by observing the amplitude of up-and-down vibration of the centr