## Principles of Electricity and Electromagnetism |

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Page 365

Hysteresis

of particular interest for alternating-current work are those which appear when the

sample is subjected to a magnetic field that is periodically. reversed in direction.

Hysteresis

**Curves**and General Magnetic Properties.—The phenomena that areof particular interest for alternating-current work are those which appear when the

sample is subjected to a magnetic field that is periodically. reversed in direction.

Page 392

The

open-circuit brush voltage as a function of the field current. Since the field current

is proportional to the actual potential difference between the brushes, V, the ...

The

**curves**at the left indicate its graphical derivation. The**curve**marked Vo is theopen-circuit brush voltage as a function of the field current. Since the field current

is proportional to the actual potential difference between the brushes, V, the ...

Page 527

If b is considerably smaller than a, this equation represents the type of

shown by one of the dashed units of Fig. 15.21. This

in grid H4– L– L– 7ty be / 7ty be 2 7./be/ 7./be2 |- PTV-TV* == o Rp R SIZ 2 if oil ...

If b is considerably smaller than a, this equation represents the type of

**curve**shown by one of the dashed units of Fig. 15.21. This

**curve**describes the variationin grid H4– L– L– 7ty be / 7ty be 2 7./be/ 7./be2 |- PTV-TV* == o Rp R SIZ 2 if oil ...

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alternating current alternating-current amplitude angle angular velocity anode antenna applied approximately armature assumed atom axis calculated capacity cathode centimeter characteristic circuit coefficient coil component condenser conducting conductor considered curl current flowing curve deflection density determined dielectric constant direct-current direction discharge displacement distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured meter motor negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potentiometer produced proportional quantity radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque transformer tube unit vector voltage volts wave wire written zero