A transformer which can produce 8V from a 240v a.c. supply, has an efficiency of...
PHYSICS
JAMB 1998
A transformer which can produce 8V from a 240v a.c. supply, has an efficiency of 80%. If the current in the secondary coil is 15A, calculate the current in the primary coil.
- A. 0.625A
- B. 1.600A
- C. 2.500A
- D. 6.250A
Correct Answer: A. 0.625A
Explanation
Efficiency = \(\frac{I_sV_s}{I_pV_p}\) x 100
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