The expression of the impedance of series LCR circuit is, Z=√R2+(ωL−
1
ωC
)2 Substitute values.
Z=√102+[(70×103)(10×10−6)−
1
(70×103)(1×10−6)
]2
Z=√100+(−13.58)2 Here, negative sign shows that the circuit properties are more likely to be capacitive than the inductive i.e., XC>XL Thus, the circuit behaves like series RC circuit.
