The dynamo converts
A. mechanical energy into electrical energy
B. electrical energy into mechanical energy
C. mechanical energy into magnetic energy
D. None of the above
Answer: Option A
A. mechanical energy into electrical energy
B. electrical energy into mechanical energy
C. mechanical energy into magnetic energy
D. None of the above
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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