The direction of magnetic field at any location on the earth's surface is commonly specified in terms of
A. field declination
B. field inclination
C. both field declination and field inclination
D. horizontal component of the field
Answer: Option D
A. field declination
B. field inclination
C. both field declination and field inclination
D. horizontal component of the field
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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