NEET-XII-Physics

39: Alternating Current

with Solutions - page 2
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  • #1
    A capacitor acts as an infinite resistance for
    (a) DC
    (b) AC
    (c) DC as well as AC
    (d) neither AC nor DC
    digAnsr:   a
    Ans : (a) DC
    For a DC source, ω = 0. So, the reactance of the capacitance is given by,
    `` {X}_{C}=\frac{1}{\omega C}=\frac{1}{0}=\infty ``
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