One 10 V, 60 W bulb is to be connected to 100 V line. The required induction coil has self inductance of value (f=50 Hz)
0.052 H
2.42 H
16.2 mH
1.62 mH
Current through the bulb i=PV=6010=6A
V=VR2+VL2
(100)2=(10)2+VL2⇒ VL=99.5 Volt
Also VL=iXL=i×(2πνL)
⇒ 99.5=6×2×3.14×50×L⇒ L=0.052 H