A transformer which can produce 8V from a 240v ... - JAMB Physics 1998 Question
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 option: a
Efficiency = \(\frac{I_sV_s}{I_pV_p}\) x 100
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