Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. OAU
  4. /
  5. Physics
  6. /
  7. 2015/2016
  8. /
  9. Q22
Question 22

Which of the following is the function of a p-n junction semiconductor device?

  • A.It transforms a direct voltage to AC voltage
  • B.It steps up an AC voltage
  • C.It steps down an AC voltage
  • D.It transforms AC voltage to direct voltage
Objective

Question details

Exam body
OAU
Subject
Physics
Year
2015/2016
Question no.
#22
Type
Objective
Previous · Q21Which of the following is not true of a force experienced by a current carrying…

More from this paper

  • Q15Which of the following is not an eye defect?
  • Q16Sound wave of velocity 340m/s is reflected from an obstacle 5 seconds after…
  • Q17Five 20 resistors were connected in two ways, in series and parallel. What is…
  • Q18Calculate the energy stored in a capacitor of capacitance 50µF when a…
  • Q19Calculate the equivalent capacitance between the terminals.
  • Q20A material of threshold frequency 4.5 x 10 15 Hz, was bombarded with Photons of…
See all Physics 2015/2016 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy