\(I=\frac{P}{V}=\frac{100 \times 10^{-3}}{0.5} 0.2 A\)
Value of connected series resistance,
\(R=\frac{1.5-0.5}{0.2} \Rightarrow R=\frac{1}{0.2}\)
\(\therefore R=5 \Omega\)
$A\,\, 0\,\, 1\,\, 0\,\, 1$
$B \,\,0\,\, 0\,\, 1 \,\,1$
$y \,\,1\,\, 0\,\, 0\,\, 0$