otion between the loop and the magnet (one must have moved relative to the other); the current disappears when the relative motion is stopped. b) Faster motion produces a smaller current. c) If moving the magnets north pole toward the loop causes a clockwise current, then moving the north pole away causes counterclockwise current; the results reverse when moving the
otion between the loop and the magnet (one must have moved relative to the other); the current disappears when the relative motion is stopped. b) Faster motion produces a smaller current. c) If moving the magnets north pole toward the loop causes a clockwise current, then moving the north pole away causes counterclockwise current; the results reverse when moving the
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This picture describes an experiment that demonstrates induction. Select the three correctconclusions from these experiments below
a) A current appears only if there is relative motion between the loop and the magnet (one must have moved relative to the other); the current disappears when the relative motion is stopped.
b) Faster motion produces a smaller current.
c) If moving the magnets north pole toward the loop causes a clockwise current, then moving the north pole away causes counterclockwise current; the results reverse when moving the south pole.
d) Faster motion produces a larger current
Transcribed Image Text:Galvanometer
Coil
1=0N
Stationary
N.
(c)
(d)
(e)
(a)
(b)
Figure 13.2 Movement of a magnet relatíve to a coil produces emfs as shown (a-d). The same emfs are produced if the coil is
moved relative to the magnet. This short-lived emf is only present during the motion. The greater the speed, the greater the
magnitude of the emf, and the emf is zero when there is no motion, as shown in (e).
S.
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