If a `0.03` H inductor, a `10 Omega` resistor and a `2muF` capacitor are connected in series. At what frequency will they resonate? What will be the phase angle at resonance?
Text Solution
Verified by Experts
`f=1/(2pisqrt(2C))` =resonasnce frequency `=1/(2pisqrt(0.03xx2xx10^-6))` `=650Hz` At resonance, `X_L=X_C` and `Z=R` `:. cos phi=R/Z=1` or `phi=0^@`.
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Knowledge Check
A 12 Omega resistor and a 0.21 H inductor are connected in series to an a.c. source operating at V, 50 cycle second. The phase angle between current and source vottage is
A
`30^(@)`
B
`40^(@)`
C
`80^(@)`
D
`90^(@)`
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A
800 rad/sec
B
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C
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D
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