Question

a 12 v battery is applied in forward bias across a circuit having p-n junction and resistance r in series. a 0.6v potential drop is across p-n junction and current is 2x10-3 a the resistance r is

Answer 1

Given:

A 12 V battery is applied in forward bias across a circuit having p-n junction and resistance r in series. a 0.6 V potential drop is across p-n junction and current is 2x10^-3 Amp.

To find:

Value of resistance r

Calculation:

0.6 Volt potential drop across the P-N junction diode , so the potential drop across the resistance r will be :

$\rm{V = 12 - 0.6 = 11.4 \: volt}$

Current across the resistance is 2 × 10^(-3) amp.

So, applying Ohm's Law :

$\sf{V = i \times r}$

$\sf{ = > r = \dfrac{V}{i} }$

$\sf{ = > r = \dfrac{11.4}{2 \times {10}^{ - 3} } }$

$\sf{ = > r = \dfrac{5.7}{ {10}^{ - 3} } }$

$\sf{ = > r = 5.7 \times {10}^{3} \: ohm }$

So, final answer is:

$\boxed{ \sf{ r = 5.7 \times {10}^{3} \: ohm }}$

Answer 2

Answer:

5.7×10^3

Explanation:

hope it will help uh