How do I do this?

1.

A car battery gives 12V, just as much as 8 AA batteries that give 1.5V each. Their internal resistance, however, is very different. In order to start a car, one needs a current of 200A. The effective resistance of the motor starter circuit is about 0.05 Ohm. (a) What is the current that a car battery manages to pass through the car starter circuit? (b) How many AA batteries would you need to start a car? How would you connect them to each other to get both 12V and the 200A necessary for starting? Parallel? Series? Both? Draw your circuit and calculate the resulting current. The internal resistance of a car battery is 0.001 ohms and of a single AAbattery is 0.2 Ohm. R + 9 Two isolated, concentric, spherical, conducting shells of radius r and R carry positive total net charges q and Q, respectively. The shells are very thin compared to the radii. (a) What is the potential at the surface of the large sphere, assuming V = 0 at infinity? (b) What is the potential of the small sphere? (c) Calculate the potential difference between the spheres, and indicate which one is at a higher potential. (d) Now the spheres are connected with a fine conducting wire so that charge could redistribute between them. Will the charge move, and, if so, which direction will it flow? What will be the final charge on each sphere