Question
Physics Question on Alternating current
A step-up transformer operates on a 230 V line and a load current of 2 A. The ratio of primary and secondary windings is 1 : 25. Then the current in the primary is
A
25 A
B
50 A
C
100 A
D
12.5 A
Answer
50 A
Explanation
Solution
EPES=NPNS=ISIP
Ip=NPNSIS
=125×2
=50A