The following are true of nerve stimulators
(a)
the applied electrical potential can be as high as 150 V
(b)
the apparatus uses a square-wave electrical signal
(c)
the pulse current should be 0.5–5.0mA when skin electrodes
are used
(d)
when the resistance increases the current must decrease, at
a constant voltage
(e)
stimulation at a constant current is preferable to stimulation at constant
voltage
(a) true (b)
true (c)
false (d)
true (e)
true
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