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Author Question: A voltage V is applied to the primary coil of a step-up transformer with a 3:1 ratio of turns ... (Read 188 times)

elizabeth18

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on: Jul 27, 2018
A voltage V is applied to the primary coil of a step-up transformer with a 3:1 ratio of turns between its primary and secondary coils. A resistor R connected to the secondary dissipates a power P = 100 W.
 
  How much power is dissipated by the same resistor when the ratio of turns in the transformer is changed to 24:1 and the same input voltage is used?
  A) 12,000 W
  B) 2400 W
  C) 24,000 W
  D) 6400 W
  E) 100 W

Question 2

What is the energy, in eV, of the n = 3 state in hydrogen?
 
  What will be an ideal response?


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brittrenee

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Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

-1.5 eV


elizabeth18

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Reply 2 on: Jul 27, 2018
Excellent

duy1981999

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Reply 3 on: Yesterday
Wow, this really help

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