## Principles of Electricity and Electromagnetism |

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Page 9

The Law of

handle electrical phenomena quantitatively it is necessary to know how the

between charges varies with the physical circumstances. It must be specified first

of all ...

The Law of

**Force**between Elementary Electrostatic Charges.— In order tohandle electrical phenomena quantitatively it is necessary to know how the

**force**between charges varies with the physical circumstances. It must be specified first

of all ...

Page 10

The magnitude of this

knob K that supports the upper end of the fiber must be rotated in order to return

the arm to its equilibrium position in the absence of the charge q2. Thus the

torque ...

The magnitude of this

**force**may be measured by the angle through which theknob K that supports the upper end of the fiber must be rotated in order to return

the arm to its equilibrium position in the absence of the charge q2. Thus the

torque ...

Page 12

This unit

and the unit of power is the joule per second ol watt. As the unit of charge is not

defined through Coulomb's law on this system, a constant of proportionality will ...

This unit

**force**is called the newton. The unit of work is the newton meter or joule,and the unit of power is the joule per second ol watt. As the unit of charge is not

defined through Coulomb's law on this system, a constant of proportionality will ...

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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