The efficiency of a transformer is:
A. η = \(\frac{\text { output power }}{\text { input power }}\)
B. η = \(\frac{\text { input power }}{\text { output power }}\)
C. η = input power – output power
D. η = \(\frac{\text { input voltage }}{\text { output voltage }}\)
Answer:A
The efficiency of a transformer is:
A. η = \(\frac{\text { output power }}{\text { input power }}\) B. η = \(\frac{\text { input power }}{\text { output power }}\) C. η = input power – output power D. η = \(\frac{\text { input voltage }}{\text { output voltage }}\)