An ac generator consists of a coil with 40 turns of wire, each with an area of 0.06 m2. The coil rotates in a uniform magnetic field B = 0.4 T at a constant frequency of 55Hz. What is the maximum induced emf?
A) 110 V
B) 625 V
C) 200 V
D) 421 V
E) 332 V
E
You might also like to view...
Which Big Bang "puzzles" does the inflationary model resolve?
A. The cosmic background radiation is smooth, but the distribution of matter in the Universe is lumpy. B. The energy of expansion is almost exactly equal to the collective gravitational force between galaxies. C. The Universe is all ordinary matter with almost no antimatter. D. All of these choices are correct.
How is a technical civilization defined?
A) a civilization that can avoid self-destruction for long periods B) a civilization that can communicate over interstellar distances C) a civilization that has the ability to store and process information D) a civilization that has developed interplanetary space travel E) a civilization that can construct tools out of raw materials
Is it possible for heat to travel from a cold object to a hotter object?
What will be an ideal response?
What drives the motion of the continental plates on Earth?
A) lava flows in trenches along the sea floor B) tidal forces C) convection cells in the mantle D) Earth's magnetic field E) rotation of the liquid core