## Principles of Electricity and Electromagnetism |

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Page 587

points. It should be mentioned that all quantities capable of representation by an

arrow are not

electric ...

**vector**, and the direction associated with the**vector**is that in which the arrowpoints. It should be mentioned that all quantities capable of representation by an

arrow are not

**vectors**in the sense in which the term is here used. All directedelectric ...

Page 588

should be so chosen that for an observer looking along this positive direction a

clockwise rotation about this axis through a right angle brings Or into the position

...

**vector**analysis this choice is significant. The positive direction of the axis Ozshould be so chosen that for an observer looking along this positive direction a

clockwise rotation about this axis through a right angle brings Or into the position

...

Page 591

The

and the unit

multiplying out in the usual way, and then substituting the above expressions for

the unit ...

The

**vector**product of A and B may be expressed in terms of their componentsand the unit

**vectors**. Expressing A and B in terms of these unit**vectors**,multiplying out in the usual way, and then substituting the above expressions for

the unit ...

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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