A bar magnet is dropped, N pole down, so it falls through a horizontal loop of wire. As it approaches the loop, the induced current (viewed from above) is:
A) clockwise
B) counterclockwise
C) zero
B
You might also like to view...
A cupful of liquid water placed on the surface of Mars would
A. quickly boil and evaporate. B. rapidly cool but remain liquid. C. expand rapidly and shatter. D. quickly freeze into solid ice.
Which of the following statements is true?
A: Nothing can travel faster than the speed of light B: There is a black hole at the center of our Solar System C: If the Sun were magically to turn into a black hole, Earth's orbit would immediately change D: Although visible light cannot escape from inside the event horizon of a black hole, high energy radiation, such as gamma rays, can escape E: Black holes defy the laws of gravity
When a liquid freezes
A) the temperature of the substance increases. B) the temperature of the substance decreases. C) heat energy leaves the substance. D) heat energy enters the substance.
An object is moving with constant non-zero acceleration in the +x-axis. The position versus time graph of this object is
A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.