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How was Physics P42

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Do you have to connect it to a power supply?
No, the magnetic field whose strength is being measured will induce a voltage across the Hall probe. Only a Hall probe, and voltmeter, that's the complete circuit, besides the other circuit providing the magnetic field .
 
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No, the magnetic field whose strength is being measured will induce a voltage across the Hall probe. Only a Hall probe, and voltmeter, that's the complete circuit, besides the other circuit providing the magnetic field .
ooooo....thats true. Thanks again. All the best for tomorrow!!!(y)
 
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Most of my friends and i found it quiet hard.. Maybe im just not confident with my anwers? Not sure :(
 
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