In step-down transformer, the AC output gives the
A. current more than the input current
B. current less than the input current
C. current equal to the input current
D. voltage more than the input voltage
Answer: Option A
A. current more than the input current
B. current less than the input current
C. current equal to the input current
D. voltage more than the input voltage
Answer: Option A
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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