Related InterviewSolutions

• The energy band gap of Si isA. 0.70 eVB. 1.1 eVC. between 0.70 eV to 1.1 eVD. 5 eV
• In an insulator, the forbidden energy gap between the valence band and conduction band is of the order ofA. 1 MeVB. 0.1 MeVC. 1 eVD. 5 eV
• What is the current in the circuit shown below? A. zeroB. `10^(-2)A`C. `1 A`D. `0.10 A`
• A sample of n-type siliconA. Contains an excess of free electrons therefore it is negatively chargedB. Contains an excess of free electrons and it is electrically neutralC. Predominantly contains trivalent impuritiesD. Contains only pentavalent element
• In the circuit given below, the value of the current is A. zeroB. `10^(-2)A`C. `10^(2)A`D. `10^(-3)A`
• The current through an ideal `PN`-junction shown in the following circuit diagram will be A. zeroB. 1 mAC. 10 mAD. 30 mA
• A piece of semiconductors is connected in sereis in an electric circuit. On increasing the temperautre, the current in the circuit willA. decreaseB. remain unchargedC. increaseD. stop flowing
• Hole isA. an anti-particle of electronB. a vacancy created when an electron leaves a covalent bondC. absence of free electronsD. an artificially created particle
• Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are `0.36 m^(2)//Vs` and `0.17 m^(2)//Vs`. The electron and hole densities are each equal to `2.5 xx 10^(19) m^(-3)`. The electrical conductivity of germanium is.A. `0.47 S//m`B. `5.18 S//m`C. `2.12 S//m`D. `1.09 S//m`
• In figure , assuming the diodes to be ideal , A. `D_(1)` is forward biased, `D_(2)` is reverse biased and hence current flows from A to BB. `D_(2)` is forward biased, `D_(1)` is reverse biased and hence no current flows from B to A and vice-versaC. `D_(1)` and `D_(2)` are both forward biased and hence current flows from A to BD. `D_(1)` and `D_(2)` are both reverse biased and hence no current flows from A to B and vice-versa