7. Two coils A and B are connected in series across 240 V, 50 Hz. If the resistance of coil A is 5 ohms and the inductance of coil B is 15 mH, and the power consumed in the circuit is 2400 W, with a reactive power of 1600 VAR, calculate:
a) the circuit current
b) the inductance of coil A
c) the resistance of coil B
d) the circuit power factor
e) the voltage across coil B
L = 0.015H
R_B = 5 ohms
240V, 50Hz