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Mutual inductance This worksheet and all related files are
Mutual inductance This worksheet and all related files are

... inductance. For those who mistakenly answer ”yes” to this question, review Faraday’s Law of electromagnetic induction: that induced voltage only occurs when there is a change of magnetic flux over time, and that the earth’s magnetic field is constant (for all practical purposes). The follow-up quest ...
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Grounding and Bonding in Boats and Marinas
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... completing all required inspections and by prohibiting swimming in and around marinas. Let’s turn our attention to the last issue related to grounding and bonding on boats and in marinas. Again, keep in mind that the fundamental reason for grounding and bonding is to prevent personal injury and fire ...
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Alternating current



Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).
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