The current in the primary coil of a transformer is 2.5A. If the coil has...
PHYSICS
WAEC 1997
The current in the primary coil of a transformer is 2.5A. If the coil has 50 turns and the secondary 250 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
Correct Answer: B. 0.5A
Explanation
\(\frac{I_s}{I_p}=\frac{n_p}{n_s}, I_s= \frac{I_pn_p}{n_s}=\frac{2.5\times50}{250}\Rightarrow0.5A\)
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