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प्रश्न
A series LCR circuit contains inductance 5 mH, capacitance 2µF and resistance ion. If a frequency A.C. source is varied, what is the frequency at which maximum power is dissipated?
विकल्प
`5/pi xx 10^3`
`10^-5/pi "HZ"`
`10^5/pi` HZ
`2/pi xx 10^5` HZ
MCQ
रिक्त स्थान भरें
उत्तर
`5/pi xx 10^3`
Explanation:
Frequency at which maximum power is dissipated,
f = `1/(2 pi sqrt"LC") = 1/(2pi) xx 1/(sqrt(5 xx 10^-3 xx 2 xx 10^-6))`
or, f = `10^4/(2pi) = (10 xx 10^3)/(2pi) = 5/pi xx 10^3` Hz
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