Lenz's Law: The three loops of wire shown in the figure are all hanging in the same uniform magnetic field 
that is perpendicular to the page and does not vary with time. Loop 1 swings back and forth like the bob in a pendulum, Loop 2 rotates about a vertical axis, and Loop 3 oscillates up and down at the end of a spring. Which loop (or loops) will have an emf induced in them?
A. Loop 1
B. Loop 2
C. Loop 3
D. Loops 1 and 3
E. Loops 2 and 3
Answer: B
You might also like to view...
The major presence of water detected on the Moon is in
A) the puffs of steam seen coming from some still active lunar volcanoes. B) the floors of deep craters in the polar regions, as ice deposits that never thaw. C) faint clouds of ice in the thin lunar atmosphere. D) the flows of mud seen on the walls of some craters. E) the mare.
The speed of sound in the air inside a 0.640-m long gas column is 340 m/s. What is the fundamental resonant frequency of this air column if it is
(a) open at one end and closed at the other end? (b) open at both ends?
How can an electron be ejected from a nucleus in beta decay if it wasn't in the nucleus to begin with?
a. The electron doesn't come from the nucleus—it comes from an orbit circling the nucleus. b. A neutron in the nucleus turns into a proton, electron, and a neutrino. c. A proton in the nucleus turns into a neutron, electron, and a neutrino. d. none of the above
The paths of the planets' orbits lie in all different directions in the sky.
Answer the following statement true (T) or false (F)