What is the term of the space around a magnet where its influence can be detected?
A. Electrostatic field
B. Magnetic field
C. Gravitational pull
D. None of the above
Answer: Option B
A. Electrostatic field
B. Magnetic field
C. Gravitational pull
D. None of the above
Answer: Option B
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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