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Question
How to measure the intensity of a magnet?
Like we can measure current using ammeter...
How to measure the intensity of a magnet?
Like we can measure current using ammeter...
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Solution
The simplest way is to use a calibrated Hall probe. If you want to use a method that you can understand without having to know how the Hall effect works, you can just take a small coil with a known area and a known number of turns, attach it to a voltmeter and flip it 180 degrees about an axis perpendicular to its central axis at a known angular velocity. Note the peak voltage, and then use Faraday’s law to calculate the average field in the direction of the coil’s axis before and after the flip.
The calibrated Hall probe is a lot easier, and probably more accurate.
The simplest way is to use a calibrated Hall probe. If you want to use a method that you can understand without having to know how the Hall effect works, you can just take a small coil with a known area and a known number of turns, attach it to a voltmeter and flip it 180 degrees about an axis perpendicular to its central axis at a known angular velocity. Note the peak voltage, and then use Faraday’s law to calculate the average field in the direction of the coil’s axis before and after the flip.
The calibrated Hall probe is a lot easier, and probably more accurate.
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