Semiconducting Devices Question 205
Question: A semiconductor device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be
[MP PET 1995; CBSE PMT 1998]
Options:
A) A P-type semiconductor
B) An N-type semiconductor
C) A PN-junction
D) An intrinsic semiconductor
Show Answer
Answer:
Correct Answer: C
Solution:
When polarity of the battery is reversed, the P-N junction becomes reverse biased so no current flows.
