In a semiconductor diode, the forward voltage is changed from 0.5 V to 0.7 V, then the forward current changes by 1 mA. The forward resistance of the diode junction is

Question

In a semiconductor diode, the forward voltage is changed from 0.5 V to 0.7 V, then the forward current changes by 1 mA. The forward resistance of the diode junction is (A) 100 Ω  (B) 50 Ω  (C) 200 Ω  (D) 250 Ω

Tardigrade Admin · Accepted Answer

R =Δ l Δ V Δ V =0.7-0.5 V Δ l =1 × 10-3 A ∴ R =1 × 10-30.7-0.5=200 Ω

Q. In a semiconductor diode, the forward voltage is changed from $0.5 V$ to $0.7 V$ , then the forward current changes by $1 m A$ . The forward resistance of the diode junction is

100 $Ω$

50 $Ω$

200 $Ω$

250 $Ω$

$R = Δ l Δ V$
$Δ V = 0.7 - 0.5 V$
$Δ l = 1 \times 10 - 3 A$
$∴ R = 1 \times 10 - 30.7 - 0.5 = 200Ω$

Q. In a semiconductor diode, the forward voltage is changed from 0.5V to 0.7V, then the forward current changes by 1mA. The forward resistance of the diode junction is

100 Ω

50 Ω

200 Ω

250 Ω