Transformers: A current of 2.0 A in the 100-turn primary of an ideal transformer causes 14 A to flow in the secondary. How many turns are in the secondary?
A. 700
B. 114
C. 14
D. 4
Answer: C
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Which of the following is not an arrangement of atoms or molecules on the mers of a LCM?
(a) Isotactic (b) Syndiotactic (c) Atactic (d) Polytactic
These diagrams represent four possible models for the universe. Which model presumes the existence of some type of dark energy in the universe?
A) accelerating universe B) coasting universe C) critical universe D) recollapsing universe E) All four models assume the existence of dark energy.
At night an underwater scuba diver aims a flashlight beam toward the surface at 15° to the normal. Upon emerging into the air, the beam angle will be
A) less than 15°. B) 15°. C) more than 15°. D) impossible to predict.
What is the magnitude of the magnetic field at point P if a = R and b = 2R?
A.
B.
C.
D.
E.
