9. Answer each of the following statements in your answer booklets by responding

Question

9. Answer each of the following statements in your answer booklets by responding "Tue" (or T") if it is true or "False" (or "F") if it is false. (a) Assuming full ionisation of the dopant atoms at a given temperature, increasing the temperature increases the conductivity of a semiconductor while in the "extrinsic" region. (b) In a MOSFET the resistance of the conduction channel is changed by varying the (c) A PN junction has a built-in electric field due to drift of the electrons and holes into (d) Photoresist is a light-sensitive material used in several industrial processes, such as voltage to the drain. P and N-regions, respectively. photolithography, to form a patterned coating on a surface. in amplification mode. (e) The emitter is forward biased and the collector is reversed biased for the BJT to be

Explanation / Answer

(a) True

(b) False

Resistance of mosfet conduction channel is varied by varying the voltage to the gate.

(c) False

An equilibrium is achieved and therefore there is no electric field until an external source is connected.

(d) True

(e) True

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