Unformatted text preview: son ftom letting go of the conducton? b) Is there a significant dsk of this type ol accident occurring while servicing a pe$otal computer, which typically has 5 V and 12 V souces l 2.38 To unde$tand why the voltage level is not the sole ,lli,l*l, delelmina n I oI polential iniur] due to elecrrical '- ' _' sbock, con.ider lhe case ol a .latic eleclricily shock mentioned in the Practjcal Perspective at the start of this chapter. W}IeIl you shuffle youi feet across a carpet, your body becomes charged The effect of this charye is that your entire body iepresents a vollage potential. w]len you touch a metal door-knob, a voltage difference is created between you and the doorknob, and curent flows-but the con-duction material is air, not your body! Suppose the model of the space between your hand and the doorknob is a 1 MO resistance what voltage potential exists between your hand and the doorknob ifthe current causing the mild shock is 3 mA?...
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- Spring '07
- Trigraph, esistance hat voltage, rm.l eg. ndl, mre glven oy, dc voltage source,one