A transformer has an efficiency of 92.5%. the ratio number of turns in the primary coil to that in the secondary coil is 128 : 45. If the current passing through the secondary coil is 9.0A, calculate the current passing through the primary-coil.
-
A.
2.93A -
B.
3.16A -
C.
3.42A -
D.
25.60A -
E.
27.68A