SEMICONDUCTOR

1. The resistivity of a semiconductor lies between 

• (a)10 ^-6 Ωm to10^-8 Ωm
• n(b) 10⁸ Ωm to10¹⁴ Ωm
• (c) 10 ^-2 Ωm to10⁴ Ωm
• (d) none of these

2. The forbiddenn energy gap for Germanium is of the order of

• (a) 0.7 eV
• (b) 0.3 eV
• (c) 1.1 eV
• (d) 10 eV

3. Which of the following is a pentavalent impuity added while forming an extrinsic semiconductor ?

• (a) Boron 
• Arsenic
• Indium
• Gallium

The reverse saturation current in a PN Junction diode is only due to 

• majority carriers
• minority carriers
• acceptor ions
• donor ions

Doping of Semiconductors

• materials which can conduct electricity better than insulator, but not as well as conductors.

• The process of adding of a certain amount of specific impurities atoms in the pure semiconductor.

• when 4 electrons in outermost orbit.

which statement is correct? (the dark circles represent the electrons)

• p-type of the diode is connected to the negative terminal.

• Electron moves across the p-n junction, makes the diode forward biased

• current will not flow in the circuit

• reverse biased circuit

Tags

NGSS.HS-PS2-5

The characteristics of p-type semiconductors is includes

• Majority carriers are electron

• Has tendency to gain electron

• Has tendency to donor electron

• Easy to conduct electricity

The process of adding an impurity to an intrinsic semiconductor is called

• Doping

• Ionization

• Recombination

• Atomic modification

Which of the following statements is NOT the diode application in electronic circuit?

• Diode as voltage regulator

• Diode as Rectifier

• Diode as Amplifier

• Diode as solar cell

A full-wave rectifier consist of _______________________________

• 1 Diode

• 2 Diode

• 3 Diode

• 4 Diode