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1638 Answer Key
(a)
Figure 21.39.
(b)
(c) 0.9980, or a percent decrease
(d) 1.002, or a percent increase
(e) Not significant.
56
(a)
(b) You can’t have negative resistance.
(c) It is unreasonable that is greater than (see Figure 21.36). You cannot achieve a full-scale deflection using a current less than the sensitivity of the galvanometer.
57
24.0 V
59
61
(a) 2.00 V (b) 62
63
65
(a) (b) 2.00 s
67
86.5%
69
(a)
(b) 30.0 ms
71
(a) 20.0 s
(b) 120 s
(c) 16.0 ms 73
74
76
(a) 4.99 s (b)
(c) (d) No
(21.78)
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