Answer Happy

1. A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. A defibrillator passes 19 A of current through the torso of a person in 2.3 ms. (a) How much charge moves during this time? с (b) How many electrons pass through the wires connected to the patient? electrons 2. Suppose that the resistance between the walls of a biological cell is 1.40 x 10¹0 . (a) What is the current when the potential difference between the walls is 25 mV? A (b) If the current is composed of Nations (q=+e), how many such ions flow in 1.7 s? ions 3. A car battery has a rating of 205 ampere hours (Ah). This rating is one indication of the total charge that the battery can provide to a circuit before failing. (a) What is the total charge (in coulombs) that this battery can provide? с (b) Determine the maximum current that the battery can provide for 32 minutes. A