The secondary coil of a neon sign transformer provides 7500. V at ...

[hubes95]

The secondary coil of a neon sign transformer provides 7500. V at 0.010 A. The primary coil operates on 120. V. What current does the primary draw?
 
  A) 0.625 A
  B) 1.66 A
  C) 333. mA
  D) 6.25  10-4 A
  E) 0.16 A

Question 2

Consider the Bohr Theory Hydrogen atom.
 
  (a) How much energy is needed to cause a transition of an electron from the 2nd excited state to the 3rd excited state?
  (b) What wavelength photon just has enough energy to initiate the transition?

[jrpg123456]

Answer to Question 1

A

Answer to Question 2

(a) 0.661 eV
(b) 1.88 m