The cross sectional area of silicon bar is 100 µm2. The

The cross sectional area of silicon bar is 100 µm². The length of bar is 1 mm. The bar is doped with arsenic atoms. The resistance of bar is—

Given data,
A = 100 × 10^–8 cm²
L = 1 mm = 10^–1 cm
µ_n (for arsenic atom) = 1100
Nd >> ni ÷ n0 = Nd = 5 × 10¹⁶ cm^–3
Now,

R =		L	=	L
		QσA		n₀q·µ_n·A

=	10^–1
	5 × 10¹⁰ × 1.6 × 10^–19 × 1100 × 100 × 10^–8

≅ 11.36 kΩ