What is electromagnetic induction?
A. The generation of electric current due to the relative motion between the coil and the magnetic field
B. Generation of electrostatic force due to relative motion between the coil and the magnetic field
C. Generation of electric current due to static current between the coil and the magnetic field
D. The generation of electric current due to the relative motion between the induction motor and the magnetic field
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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