Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 148
it is a maximu/m to the strength ofthe field is called the Magnetic Moment of the Magnet. 91. Magnetic Force due to a Simple Magnet. Let NOS, Fig. 90, be a simple magnet and P any point near at which the magnetic force ia required. m Let OP = r, iPOiY=$. \/Q. Let m and — m be the polestrengths and… … Fig. 90. Produce N^P and in it takePA equal to m/PJV^; in PStake P£ equal to m/SP^ and complete the parallelogramAPBG. Then the diagonal PC represents the resultantforce. We can find a mathematical expression for this resultant in terms ofr, 6 and the known quantities m and I, but this becomes…
Electricity · Magnetism
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