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

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Correct Option
b

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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

CRIMHAZ
3 years ago

Myschool pls change dat resistance to reactance in dat question

ImmaVynde
1 year ago

Can't see any explanation
update how

@materamabilis01
3 months ago

where i *10^6 coming fom please

ICALEB
1 year ago

the question is wrong and needs better explanation

PearlFei
1 year ago

no explanation

Judith05
6 months ago

how is F=800/pi.
becouse when i solved i got F=1/800pi

Anzyumoh
4 years ago

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

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