At what frequency would a capacitor of 2.5μF used in the radio circuit have a reactance of 250Ω
a
\(\frac{π}{800}\) Hz
b
\(\frac{800}{\pi}\) Hz
c
200π Hz
d
2000π Hz
Explanation
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Discussions (13)

Derekchukwuemeka
3 years ago
where capacitor C = 2.5uf = 2.5*10^-6 and
Capacitive reactance Xc = 250 ohms and Frequency F = ?
therefore
from the formula Xc = 1/2pifc you now cross multiply to obtain frequency (F) = 1/2pi*Xc*c
i.e 1/2*250*2.5*10^-6 = 800/piHz

Anzyumoh
4 years ago
the question is misleading, that is reactance not resistance. note they are both measured in ohms

