A filamentary conductor is a type of conductor that consists of a thin, elongated wire or thread-like structure. It is commonly used in applications where flexibility and compactness are essential, such as in electronics and electrical wiring. Filamentary conductors typically have a high aspect ratio, meaning their length is much greater than their diameter, allowing for efficient transmission of electrical signals or currents.
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Filamentary conductor is the limiting case of cylindrical conductor of circular cross section as radius approaches zero.
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Most uses for coaxial cable involve transmission of AC/RF signals. The outermost conductor is usually referred to as the "Shield" or "Ground Shield" and is connected to ground potential, while the inner conductor(s) carry the signal(s). The outermost conductor is usually thought of as being at 0 volts, while the AC signal on the inner wire transitions around it in both positive and negative. The terms Positive and Negative have little meaning as regards the AC signals but in some satellite applications, particularly the 18" dish variety, a DC "offset" is applied to the cable to power the Low Noise Block Down Converter (LNB) on the dish, and also varying the amount of the offset between 12 and 18 volts DC to select signal polarization. In this case, the outermost conductor would be negative, and the innermost would be positive regarding the DC offset.
Microfarad is a unit of capacitance used in most electronic applications which is equivalent to one millionth of a farad. Ampere on the other hand measures the rate of electron current or flow inside an electrical conductor.
If the consumers metalwork is not bonded to the neutral a direct earth fault would result in a current of 20 amps flowing.This fault current will probably be carried by a 16 amp fuse or citcuit breaker and returned to the neutral via electrodes this will force the neutral conductor up to a potential of 200 v above earth this is known as neutral inversion
Cross-sectional_area = area of circle with diameter 100 mils. 1 mil = 1/1000 in. radius = ½ × diameter area_circle = π × radius² = π × (½ × diameter)² = π × (½ × 100 × 1/1000 in)² ≈ 0.00785 in²