Alternating Current Circuit Diagram. The faster the alternator s shaft is turned the faster the magnet will spin resulting in an alternating voltage and current that switches directions more often in a given amount of time. Alternating current circuits 12 1 ac sources in chapter 10 we learned that changing magnetic flux can induce an emf according to faraday s law of induction.
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Alternating current ac is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current dc which flows only in one direction. Capacitor transformers not the movie lc and rlc circuits no generator driven rlc circuits series impedance and power rc and rl circuits low high frequency rlc circuit solution via. All productive or interesting circuits operate.
At a particular instant in time the current in the circuit is 2 0 a and the current is decreasing at the rate of 0 2 a s.
Connected to a load this reversing voltage polarity will create a reversing current direction in the circuit. As opposed to dc or direct current ac is the kind of electrical power supplied to homes and other buildings while dc power is primarily for different specific applications. In particular if a coil rotates in the presence of a magnetic field the induced emf varies sinusoidally with time and leads to an alternating current ac and provides a source of ac. All productive or interesting circuits operate.
