Q6 (part a) The car lead-acid battery has generally 12 V output voltage, and its internal resistance is so small that can be neglected. When starting the engine, the current of 480 A is flowing from the battery to supply the "car starter" (an electrical motor that starts the engine ). How much power does the "car starter" consume when starting the engine? Q6 (part b) Now let's try using a pack of AA batteries (1.2 V output voltage and 0.2 Ohm internal
Q6 (part a) The car lead-acid battery has generally 12 V output voltage, and its internal resistance is so small that can be neglected. When starting the engine, the current of 480 A is flowing from the battery to supply the "car starter" (an electrical motor that starts the engine ). How much power does the "car starter" consume when starting the engine?
Q6 (part b) Now let's try using a pack of AA batteries (1.2 V output voltage and 0.2 Ohm internal resistance each) to replace the lead-acid battery. In order to match the car lead-acid battery, first 10 such AA batteries need to be connected in series to form a 12V cell, while 50 such cells need to be connected in parallel (as shown in picture above; the total of 500 AA batteries are used). Find the power that is supplied to the same "car starter" using this pack of AA batteries. (Hint: for the second question, you need to find the total voltage and the internal resistance of the whole pack; you also need to find the resistance of the "car starter"; this can be done using the data of the first part of this problem)
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