## Principles of Electricity and Electromagnetism |

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Page 299

following way: The change in magnetic energy of a circuit carrying a current i

when the

= i d<t> The magnetic-

the ...

following way: The change in magnetic energy of a circuit carrying a current i

when the

**flux**through it changes by an amount d<t> is given by Eq. (9.20) as dU= i d<t> The magnetic-

**flux**density B is everywhere proportional to the current sothe ...

Page 335

When the cylinder is allowed to drop through the annular opening, the

linkage of the coil changes by an amount characteristic of the particular

instrument. It is not an absolute device, but must originally be calibrated against a

standard ...

When the cylinder is allowed to drop through the annular opening, the

**flux**linkage of the coil changes by an amount characteristic of the particular

instrument. It is not an absolute device, but must originally be calibrated against a

standard ...

Page 390

12.7, but it is evident that the induced induction then has a component tending to

reduce the total

armature current. A still more important difficulty associated with commutation is ...

12.7, but it is evident that the induced induction then has a component tending to

reduce the total

**flux**and the adjustment is strictly correct for only one value of thearmature current. A still more important difficulty associated with commutation is ...

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