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LECTURE II.

THE ELECTRIC FIELD.

7. Let, in Fig. 7, a generator G transmit electric power over line A into a receiving circuit L.


Fig. 5.: showing a circuit, left Generator G connects via 2 lines A to a load L or circuit (zigzag line).
Fig. 7.While power flows through the conductors A, power is consumed in these conductors by conversion into heat, represented by . This, however, Fig. 7. is not all, but in the space surrounding the conductor certain phenomena occur: magnetic and electrostatic forces appear.


Fig. 8.: Electric Field of Conductor transverse section. Conductor in the middle, concentric solid circle lines of force around it illustrate the magnetic field, 90 degrees to that with dotted lines from the conductor radially are the lines of force for the dielectrical field
Fig. 8. — Electric Field of Conductor.

The conductor is surrounded by a magnetic field, or a magnetic flux, which is measured by the number of lines of magnetic force Φ. With a single conductor, the lines of magnetic force are concentric circles, as shown in Fig. 8. By the return conductor, the circles
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