1

JEE Main 2021 (Online) 25th July Evening Shift

Numerical

+4

-1

In a semiconductor, the number density of intrinsic charge carries at 27$$^\circ$$C is 1.5 $$\times$$ 10

^{16}/m^{3}. If the semiconductor is doped with impurity atom, the hole density increases to 4.5 $$\times$$ 10^{22}/m^{3}. The electron density in the doped semiconductor is ___________ $$\times$$ 10^{9}/m^{3}.Your input ____

2

JEE Main 2021 (Online) 22th July Evening Shift

Numerical

+4

-1

In a given circuit diagram, a 5 V zener diode along with a series resistance is connected across a 50 V power supply. The minimum value of the resistance required, if the maximum zener current is 90 mA will be __________ $$\Omega$$.

Your input ____

3

JEE Main 2021 (Online) 20th July Evening Shift

Numerical

+4

-1

A zener diode having zener voltage 8 V and power dissipation rating of 0.5 W is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance R

_{p}is .................... $$\Omega$$.Your input ____

4

JEE Main 2021 (Online) 20th July Evening Shift

Numerical

+4

-1

For the forward biased diode characteristics shown in the figure, the dynamic resistance at I

_{D}= 3 mA will be __________ $$\Omega$$.Your input ____

Questions Asked from Semiconductor (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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