Question 373910
A transformer has 200 primary windings and 20 secondary windings.  If the primary voltage is 10 V, find the secondary voltage.
Sol'n:
 Let: N1 - # of turns primary winding
      N2 - # of turns secondary winding
      V1 - voltage on primary winding
      V2 - voltage on secondary winding 
  N1/N2 = V1/V2
  V2 = V1(N2/N1)
  V2 = 10(20/200)
  V2 = 1 V ----ans.