derivation of equation of alternating current ?
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Answers
Explanation:
AC voltage v=V0sinωt
rms current Irms=I0√2
inductive reactance V0I0=ωL=XL
Phase angle of an RLC series circuit ϕ=tan−1XL−XCR
AC version of Ohm's law I0=V0Z
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.
Symbol
~ (squiggly line): You might see a squiggly line next to or above a V or A on the front of your multimeter, in addition to metric prefixes. This stands for alternating current (AC).
Invention date
1886 - Great Barrington, Massachusetts - the first full AC power system in the world is demonstrated using step up and step down transformers. The system was built by William Stanley and funded by Westinghouse. 1886 - Fall - Elihu Thomson's AC power system is rejected by the patent office.
Safety
A.C. is said to be four to five times more dangerous than D.C. For one thing, A.C. causes more severe muscular contractions. For another, it stimulates sweating, which lowers the skin resistance. Along those lines, it is important to note that resistance goes down rapidly with continued contact.
Theory
Alternating current, or ac, theory is concerned with the mathematical analysis of the steady-state behaviour of electrical circuits in which the currents and voltages vary periodically with time.