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A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply....

Physics
JAMB 2000
A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply. The reactance of the inductor is
  • A. 200 Ω
  • B. 50 Ω
  • C. 100/π Ω
  • D. 25/π Ω
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Correct Answer: Option A
Explanation
Inductive reactance is given by
XL = WL = 2πfL
XL = 2 x π x (50/π) x 2
XL = 200Ω
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Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Join your school's WhatsApp group
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