1.

An L-C-R series circuit with inductor of reactance is 25 Omega, reactance of capacitor is 50 Omega and resistance of 10 Omega is connected to an A.C. source. The impedance of the circuit will be …….

Answer»

`725 OMEGA`
`26.9 Omega`
`72.5 Omega`
`269 Omega`

SOLUTION :`|Z|=sqrt(R^2+(X_L-X_C)^2)`
`=[(10)^2 +(50-25)^2]^(1/2)`
`=[100+625]^(1/2)`
`=(725)^(1/2)`
`THEREFORE Z=26.9 Omega`


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