In an ideal transformer:
A. There is no resistance in the coils
B. There is no loss in the core
C. The core has infinite permeability (magnetism)
D. All of them
Answer: Option D
A. There is no resistance in the coils
B. There is no loss in the core
C. The core has infinite permeability (magnetism)
D. All of them
Answer: Option D
What will be the total resistance of the three 20-Ω coils connected in series?
A. 40 Ω
B. 20 Ω
C. 60 Ω
D. 800 Ω
Superconductors are substances which
A. conduct electricity at lower temperature
B. offer high resistance to the flow of current
C. offer not resistance to the flow of current
D. conduct electricity at high temperature
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