Ac and dc essay

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In its own way, it was a reaction to the pompous art rock and lumbering arena rock of the early '70s. Combined with Bon Scott 's larynx-shredding vocals, the band spawned countless imitators over the next two decades and enjoyed commercial success well into the s, scoring their biggest hits after Brian Johnson replaced the departed Scott. With his younger brother Angus serving as lead guitarist, the band played some gigs around Sydney. Angus was only 18 at the time, and his sister suggested that he wear his school uniform on-stage; the look became the band's visual trademark. The band moved to Melbourne the following year, where drummer Phil Rudd formerly of the Coloured Balls and bassist Mark Evans joined the lineup.
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Institute of Education - UCL – University College London

Electricity flows in two ways: either in an alternating current AC or in a direct current DC. Electricity or "current" is nothing but the movement of electrons through a conductor, like a wire. The difference between AC and DC lies in the direction in which the electrons flow. In DC, the electrons flow steadily in a single direction, or "forward. A magnetic field near a wire causes electrons to flow in a single direction along the wire, because they are repelled by the negative side of a magnet and attracted toward the positive side. This is how DC power from a battery was born, primarily attributed to Thomas Edison's work. AC generators gradually replaced Edison's DC battery system because AC is safer to transfer over the longer city distances and can provide more power.
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Choke (electronics)

In addition, torque is produced concurrently with the movement of the conductors in the magnetic field Hambley et al. This causes an induced electromotive force emf , which counteracts the applied voltage. Figure 3: Induced voltage in the armature winding of DC motor Hambley et al.
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DC is constant with time while AC changes at every instant of time. The major drawback of using DC is, it starts deteriorating with distance. The power supplied by DC source is not convenient for long distance as it will diminish with the increment in the distance.

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