EASY
12th Gujarat Board
IMPORTANT
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At absolute zero temperature, intrinsic Germanium and intrinsic Silicon are
(a)Super conductors
(b)Good semiconductors
(c)Ideal insulators
(d)Conductors

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Important Questions on SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS
EASY
12th Gujarat Board
IMPORTANT
In an n-type silicon, which of the following statement is true?

MEDIUM
12th Gujarat Board
IMPORTANT
At room temperature in intrinsic Silicon the number of charge carriers per unit volume is . If mobility of electrons is and mobility of holes is . Then conductivity of silicon is is

HARD
12th Gujarat Board
IMPORTANT
The electron density of intrinsic semiconductor at room temperature is . When doped with a trivalent impurity, the electron density is decreased to at the same temperature. The majority carrier density is

EASY
12th Gujarat Board
IMPORTANT
Current through the ideal diode is


EASY
12th Gujarat Board
IMPORTANT
When a forward bias is applied to a p-n junction, it

EASY
12th Gujarat Board
IMPORTANT
In an unbiased p-n junction, holes diffuse from the p-region to n-region because

MEDIUM
12th Gujarat Board
IMPORTANT
For a PN junction the average value of the potential barrier is and the electric field is present at junction region. What will be the width of depletion layer for this junction?

MEDIUM
12th Gujarat Board
IMPORTANT
The output of the given circuit in the figure given below:
