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Author Question: A circuit consists of a 10-mH coil, a 12-W resistor, a 60-W resistor, a 9.0-V battery, and a switch, ... (Read 65 times)

anshika

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on: Jul 28, 2018
A circuit consists of a 10-mH coil, a 12-W resistor, a 60-W resistor, a 9.0-V battery, and a switch, all in series. What is the time constant of this circuit?
 a. 2.5  103 s
  c. 1.4  104 s
  b. 5.6  104 s
  d. 9.0  102 s

Question 2

A long string is pulled so that the tension in it increases by a factor of four. If the change in length is negligible, by what factor does the wave speed change?
 a. 0.25
  c. 2.0
  b. 0.50
  d. 4.0


Koolkid240

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

C


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