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Question: A potential barrier of 0.50V exists across a P-N junction. If the depletion region is \(5.0 \times 1...

A potential barrier of 0.50V exists across a P-N junction. If the depletion region is 5.0×107m5.0 \times 10^{- 7}m wide, the intensity of the electric field in this region is

A

1.0×106V/m\mathbf{1.0 \times 1}\mathbf{0}^{\mathbf{6}}\mathbf{V/m}

B

1.0×105V/m1.0 \times 10^{5}V/m

C

2.0×105V/m2.0 \times 10^{5}V/m

D

2.0×106V/m2.0 \times 10^{6}V/m

Answer

1.0×106V/m\mathbf{1.0 \times 1}\mathbf{0}^{\mathbf{6}}\mathbf{V/m}

Explanation

Solution

E=Vd=0.505×107E = \frac{V}{d} = \frac{0.50}{5 \times 10^{- 7}}= 1 × 106 V/m.