Activities/Turtle Art/Using Turtle Art Sensors: Difference between revisions
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*i in amps | *i in amps | ||
and in the special case of the magnetic field B at a radius r from a wire in free space, the left side integral evaluates to B2πr and at a radius if | and in the special case of the magnetic field B at a radius r from a wire in free space, the left side integral evaluates to B2πr and at a radius if 2mm from a wire carrying 1.5 amps , the field is (4π10^-7x1.5)/(2πx2x10^-3) = 1.5x10^-4 tesla or 1.5 gauss, at 1.3mV/gauss, the expected voltage is 1.95mV and the measured approximately 1.5 mV. | ||
==Links== | ==Links== | ||