CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Physical Quantities

The current v...

Question

The current voltage relation of diode is givenby I = (e^{500/T}- 1) mA, where the applied V is in volts and the temperature T is in degree kelvin. If a student makes an error measuring\underset-+ 0.02 V while measuring the current of 7 mA at 200 K, what will be the error in the value ofcurrent in mA?(A) 0.4 mA(C) 0.5 mA(В)0.04m(D) 0.05 mA0

Open in App

Solution

Suggest Corrections

thumbs-up

0

Similar questions

300

K temperature the saturated current in Germanium diode is

10

mA. Find the:
(i) Forward voltage when diode current is

100

mA.
(ii) Diode current at backward biased voltage

001

Q. For a junction diode the ratio of forward current (

I_{f}

) and reserve current (

I_{r}

e =

electronic charges,

V =

voltage applied across junction,

K =

Boltzmann constant,

T =

temperature in Kelvin]

Q. An AC voltage source V = 10 sin(t) volts is applied to the following network. Assume that

R_{1}

3 k Ω

R_{2}

6 k Ω

R_{3}

9 k Ω

, and that the diode is ideal.

RMS current

I_{r m s} (i n m A)

through the diode is ___

Q. In a p-n junction diode, the current I can be expressed as

I = I_{0} e x p (\frac{e V}{2 K_{B} T} - 1)

I_{0}

is called the reverse saturation current,

V

is the voltage across the diode and is positive for forward bias and negative for reverse bias, and

I

is the current through the diode,

k_{B}

is the Boltzmann constant

(8.6 \times 10^{- 5} e V / K)

T

is the absolute temperature. If for a given diode

I_{o} = 5 \times 10^{- 12}

A

T = 300 K

, then
(a) What will be the forward current at a forward voltage of

0.6 V

?(b) What will be the increase in the current if the voltage across the diode is increased to

0.7 V

?(c) What is the dynamic resistance?(d) What will be the current if reverse bias voltage changes from

1 V

2 V

Q. If the forward voltage in a semiconductor diode is changed from

0.5 V

0.7 V

, then the forward current changes by

1.0 m A

. The forward resistance of diode junction will be

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Physical Quantities

PHYSICS

Watch in App

explore_more_icon

Explore more

Physical Quantities

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon