## Principles of Electricity and Electromagnetism |

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Page 8

Fig. positive charges pass to the comb, neutralizing its charge, and the

ones pass to the conducting patch. This results effectively in a transfer of

electrons from the points of the comb to the conductor beneath it. This process is

known ...

Fig. positive charges pass to the comb, neutralizing its charge, and the

**negative**ones pass to the conducting patch. This results effectively in a transfer of

electrons from the points of the comb to the conductor beneath it. This process is

known ...

Page 512

15.12. — Circuits for obtaining a

a

Z is ...

15.12. — Circuits for obtaining a

**negative**impedance or reactance. Type a,**negative**reactance; type b,**negative**reactance. must in general be provided) anda

**negative**or capacitative reactance proportional to the frequency is produced ifZ is ...

Page 513

Secondary electrons emitted by the plate are drawn from it to the grid, resulting in

a flow of current in the reverse sense in the plate circuit and the

resistance associated with instability. The use of a tetrode with the first grid at ...

Secondary electrons emitted by the plate are drawn from it to the grid, resulting in

a flow of current in the reverse sense in the plate circuit and the

**negative**dynamicresistance associated with instability. The use of a tetrode with the first grid at ...

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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 grid hence 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 scalar Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero