Semiconductor Electronics part 1

The contribution in the total current flowing through a semiconductor due to electrons and holes are 3/4 and 1/4 respectively. If the drift velocity of electrons is 5/2 times that of holes at this temperature, then the ratio of concentration of electrons and holes is

Intrinsic semiconductor is electrically neutral. Extrinsic semiconductor having large number of current carriers would be

Assertion : In a semiconductor, the conduction electrons have a higher mobility than holes. Reason: The electrons experience fewer collisions.

In pure semiconductor, the number of conduction electrons is 6 xx 10^18 per cubic metre. How many holes are there in a sample of size 1 cm x 1 cm x 1 mm?

Assertion :-(A) semiconductors are solids with conductivites in the intermediate range from 10^(-6)-10^(4) ohm ^(-1)m^(-1) Reason :-(R ) internmediate conductivity in semiconductor Is due to partially filled valence band .

Assertion :-(A) semiconductors are solids with conductivites in the intermediate range from 10^(-6)-10^(4) ohm ^(-1)m^(-1) Reason :-(R ) internmediate conductivity in semiconductor Is due to partially filled valence band .

Assertion :-(A) semiconductors are solids with conductivites in the intermediate range from 10^(-6)-10^(4) ohm ^(-1)m^(-1) Reason :-(R ) internmediate conductivity in semiconductor Is due to partially filled valence band .

In a semiconductor,

In intrinsic semiconductor at room temperature, the number of electrons and holes are

Assertion: The conductivity of an intrinsic semiconductor depends on its temperature Reason: No important electronic devices can be developed using intrinsic semiconductors.