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Course: Class 12 Physics (India) > Unit 7

Lesson 5: LCR series circuit (basics)
Science
Class 12 Physics (India)
Alternating current
LCR series circuit (basics)
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LCR series circuit: phase angles

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Problem

An AC source supplying voltage VS=(250 V)sin⁡(100 rad s−1)t, powers a series LCR circuit with components, L=100 mH, C=10 mF, and R=12 Ω.
The current
the voltage VS with a phase angle, ϕ=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
°.
Note: ϕ is a positive number. Write ϕ in degrees, rounded to the nearest integer.