Uploaded November 2020 | Updated September 2026, 2 weeks ago

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This video is an introduction to a lab which investigates how the magnetic field strength around a current carrying wire is related to the radial distance from that wire and the size of the current in the wire. A compass is used to determine the direction of the net magnetic field at different distances from the wire for different amounts of current, and this video shows how to calculate the magnetic field strength using the compass. The following links are used to collect data for this lab.

The 1st three data collection videos linked below are used to determine the relationship between the strength of the magnetic field around a wire and the radial distance from that wire. Each of the three videos uses a different constant current in the wire to create the magnetic field.

Magnetic Field Strength Lab (Data Set #1) B vs. r: youtu.be/1ch5Aj7PUeA
Magnetic Field Strength Lab (Data Set #2) B vs. r: youtu.be/1SPFb5bfdVY
Magnetic Field Strength Lab (Data Set #3) B vs. r: youtu.be/WFf17tUl4So

The last three data collection videos linked below are used to determine the relationship between the strength of the magnetic field around a wire and the radial distance from that wire. Each of the three videos uses a different constant radial distance while the current is changed.

Magnetic Field Strength Lab (Data Set #4) B vs. I: youtu.be/asOfAlpDIFw
Magnetic Field Strength Lab (Data Set #5) B vs. I: youtu.be/vn_DVyNZqdk
Magnetic Field Strength Lab (Data Set #6) B vs. I: youtu.be/FeDN-eSFDgc