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Alternating Current | Peak voltage of AC | Angular frequency of AC | Phase of AC | Class 12

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Published on Jul 26, 2016

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Class 12 Physics – Alternating Current
All the studies which we have done until now were with DC (direct current) only. Direct current does not change its direction with time. But the mains supply we get in our homes is alternating voltage and the current we get out of it is alternating current. But why do we need this voltage? Why can’t we just use DC sources? All these questions will be answered in this chapter. We’ll learn
1. What is alternating current?
2. How to represent alternating current- Phasors?
3. Power in alternating current.
4. Impedance.
5. Current calculation of AC circuits.
6. Power in series LCR circuits.

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