A resistor of 50Ω, a capacitor of (‌

25

π

)µF and an inductor of (‌

4

π

)H are connected in series across an ac source whose voltage (in volt) is given by V=70 sin‌(100πt). Calculate:
(a) the net reactance of the circuit.
(b) the impedance of the circuit
(c) the effective value of current in the circuit.