6. What is a type of doping material?
(a) extrinsic semiconductor material
(b) pentavalent material
(c) n-type semiconductor
(d) majority carriers
7. What can a semiconductor sense?
(a) magnetism
(b) temperature
(c) pressure
(d) all of the above
8. When is a P-N junction formed?
(a) in a depletion region
(b) in a large reverse biased region
(c) the point at which two opposite doped materials come together
(d) whenever there is a forward voltage drop
9. When an electron jumps from the valence shell to the conduction band, it leaves a gap. What is this gap called?
(a) energy gap
(b) hole
(c) electron-hole pair
(d) recombination
10. What is the voltage across R1 if the P-N junction is made of silicon?
(a) 12 V
(b) 11.7 V
(c) 11.3 V
(d) 0 V
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