## Principles of Electricity and Electromagnetism |

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Page 288

As an instance the axial field due to a

wire , can be found by integrating Eq . ( 9 . 11 ) over all the turns of the

XI - - itibi dH Fig . 9 . 12 . - Magnetic field on the axis of a current - carrying loop .

As an instance the axial field due to a

**solenoid**, which is a closely wound helix ofwire , can be found by integrating Eq . ( 9 . 11 ) over all the turns of the

**solenoid**XI - - itibi dH Fig . 9 . 12 . - Magnetic field on the axis of a current - carrying loop .

Page 333

This procedure permits the determination of the ballistic constant of a

galvanometer by the use of a standard

breaks the circuit through the

Fig . 10 .

This procedure permits the determination of the ballistic constant of a

galvanometer by the use of a standard

**solenoid**. The key K of Fig . 10 . 11 first Abreaks the circuit through the

**solenoid**and then breaks the circuit composed ofFig . 10 .

Page 357

An astatic Current through - 2 balancing

wwwwwwww es + Current through B magnetizing Sample

— Bozorth magnetometer . magnetometer similar to the movement in the astatic ...

An astatic Current through - 2 balancing

**solenoid**wwwwwwwwwwwwwwwwwwwwww es + Current through B magnetizing Sample

**solenoids**Fig . 11 . 7 .— Bozorth magnetometer . magnetometer similar to the movement in the astatic ...

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angle applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance respect result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero