The current in the primary coil of a transformer is 2.5A. If the coil has 50 turns and the secondary250 turns, calculate the current in the secondary coil. Neglect energy losses in the transformer
A
0.2A
B
0.5A
C
2.5A
D
5A
E
12.5A
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(\frac{I_s}{I_p}=\frac{n_p}{n_s}, I_s= \frac{I_pn_p}{n_s}=\frac{2.5\times50}{250}\Rightarrow0.5A\)
Source: Myschool Past Questions Archive (Record #26316)