Answered

At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Connect with professionals on our platform to receive accurate answers to your questions quickly and efficiently. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

You put a diode in a microelectronic circuit to protect the system in case an untrained person installs the battery backward. In the correct forward-bias situation, the current is 200 mA with a potential difference of 100 mV across the diode at room temperature (300 K}) . If the battery were reversed, so that the potential difference across the diode is still 100mV but with the opposite sign, what would be the magnitude of the current in the diode?

Sagot :

ogorwyne

The magnitude of current in the diode is - 4.19 mA in the reverse situation.

Given data

forward-bias situation

current, I = 200 mA

potential difference V = 100mV

temperature = 300 K

reversed potential difference = - 100mV

How to find the magnitude of current in the diode in reverse bias situation

The current voltage relationship in an ideal diode is given by

[tex]I = I_{0} ( e^{\frac{eV}{KT} } - 1 )[/tex]

where

k = Boltzmann constant in J/k

T = temperature in Kelvin, K

forward bias situation

[tex]200*10^-3 = I_{0} ( e^{\frac{( 1.6*10^19) * (100*10^-3))}{(1.38*10^-23) * ( 300 )} } - 1 )[/tex]

[tex]I_{0} = 200*10^-3 / ( e^{\frac{( 1.6*10^19) * (100*10^-3))}{(1.38*10^-23) * ( 300 )} } - 1 )[/tex]

[tex]I_{0} = 4.2835 * 10^-3 A = 4.28 mA[/tex]

Reverse bias situation

V = -100 v

[tex]I =4.2835*10^-3 ( e^ - {\frac{( 1.6*10^19) * (100*10^-3))}{(1.38*10^-23) * ( 300 )} } - 1 )\\[/tex]

I = 4.19 mA = 4.19*10^-3 A

Therefore the magnitude of current in the diode is 4.19 mA

Read more about diode current here: https://brainly.com/question/26540960

#SPJ1

Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. We're glad you visited Westonci.ca. Return anytime for updated answers from our knowledgeable team.