# III. OBSERVATIONAL EXPERIMENT: WHAT AFFECTS THE DIRECTION OF THE INDUCED CURRENT? The goal of this experiment...

###### Question:

III. OBSERVATIONAL EXPERIMENT: WHAT AFFECTS THE DIRECTION OF THE INDUCED CURRENT? The goal of this experiment is to decide what factors affect the direction of the induced current. Available equipment: computer with internet connection. a) The six experiments shown in the table below are like experiments conducted earlier using a bar magnet, a loop of wire, and a galvanometer. The only different is that now the direction of the induced current is shown. Experiments lind NIS lind N s -- N lind s NI lind lind S A N S Coil area is collapsing Coil area is expanding b) Use the data in your notes to devise a rule relating the direction of the induced current in the coil and the change of external magnetic flux through it. Hints: (1) Focus on the direction in which Bext is changing rather than the direction of Bext itself. (2) Compare the direction of the induced magnetic field vectors B through the middle of the loop to ABext c) Formulate a general rule: How does the direction of the induced current in a coil relate to the change of external magnetic flux through it? d) Watch this video and whether the rule you created is consistent with the outcomes of the experiments in the video. Provide the details from the video to support your argument.

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