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Author Question: The phase angle of a series RL ac circuit with a 20.0-mH inductor and a certain resistor at 1000 Hz ... (Read 71 times)

itsmyluck

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on: Jul 29, 2018
The phase angle of a series RL ac circuit with a 20.0-mH inductor and a certain resistor at 1000 Hz is 20.0. What is the resistance in this circuit?
 
  A) 145  B) 200  C) 100  D) 245  E) 345

Question 2

An object 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has a magnitude of 52 cm.
  (a) How far is the image from the vertex of the mirror?
  (b) What is the height of the image?
 
  What will be an ideal response?


qytan

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Reply #1 on: Jul 29, 2018
Answer to Question 1

E

Answer to Question 2

(a) 13 cm (b) 1.7 mm


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