## Principles of Electricity and Electromagnetism |

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Page 42

It is found that the electric field toward the earth at its surface is 300

meter. Show that this implies that the earth has a surface charge density of —

0.00255 coulombs per kilometer2. x/ 11. The electric field 1,400 m. above the

earth's ...

It is found that the electric field toward the earth at its surface is 300

**volts**permeter. Show that this implies that the earth has a surface charge density of —

0.00255 coulombs per kilometer2. x/ 11. The electric field 1,400 m. above the

earth's ...

Page 136

A dry cell shows an emf. of 1.579

1000-ohm voltmeter is connected to its terminals, the meter reads 1.52

What is the internal resistance of the cell? 18. The emf. of a cell is measured by a

...

A dry cell shows an emf. of 1.579

**volts**as measured by a potentiometer. When a1000-ohm voltmeter is connected to its terminals, the meter reads 1.52

**volts**.What is the internal resistance of the cell? 18. The emf. of a cell is measured by a

...

Page 242

From the work-function point of view the value of <p for such an atomic process is

of the order of 10 to 25

Thus higher frequencies are necessary for photo- ionization than for surface ...

From the work-function point of view the value of <p for such an atomic process is

of the order of 10 to 25

**volts**rather than from 1 to 6 as in the case of surfaces.Thus higher frequencies are necessary for photo- ionization than for surface ...

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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