Allen, Charles Ricketson, 1862- [from old catalog] · New York, H. Holt and company · leaf 38
iquid, and conductors is called the circuit. > 1 r \B ACTION OF CURRENTS ON MAGNETS. 25 EXERCISE 3. ACTION OF CURRENTS ON MAGNETS. EXPERIMENT 1. Apparatus.—About 100 cm. of No. 18 insulated copper wire ; com-pass ; electric current. Tumbler-cell. Supports for compass. Object.—To study the… … rent flows from north to south. Complete the circuit andnote the direction of the swing of the needle. 2. Eepeatwith the wire directly under the needle. 3. Repeat 1 withthe current reversed, that is, flowing from south to northover the needle. 4. Eepeat 2 with the current flowingfrom south to…
Physics
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