Question

PROBLEM #3: (follow up to the car jump-starting example in class) $$R_J$$ $$r_1$$ $$r_2$$ $$R_S$$ $$R_J$$ $$E_1$$ $$E_2$$ The above circuit represent the situation of jump starting a car with a weak battery. The right part of the circuit has a weak battery ($$E_2 = 10$$ V, internal resistance $$r_2 = 0.1 \Omega$$) connected to the starter (resistor $$R_S = 0.15 \Omega$$). The left part is the other car with a good battery ($$E_1 = 12$$ V, $$r_1 = 0.02 \Omega$$), and two jumper cables ($$R_J = 0.0025 \Omega$$) are used to connect the good battery to the bad one. (a) If only the week battery is connected to the starter, what is the current through the starter? (b) Now if the other car is connected using the cables, what is the current through the starter? Note: You will need to set up the problem with Kirchhoff's rules to do part (b), and in this problem you DO need to solve the equations and find the current through $$R_S$$.

          PROBLEM #3: (follow up to the car jump-starting example in class)
$$R_J$$
$$r_1$$
$$r_2$$
$$R_S$$
$$R_J$$
$$E_1$$
$$E_2$$
The above circuit represent the situation of jump starting a car with a weak battery. The right part of the circuit has a weak battery ($$E_2 = 10$$ V, internal resistance $$r_2 = 0.1 \Omega$$) connected to the starter (resistor $$R_S = 0.15 \Omega$$). The left part is the other car with a good battery ($$E_1 = 12$$ V, $$r_1 = 0.02 \Omega$$), and two jumper cables ($$R_J = 0.0025 \Omega$$) are used to connect the good battery to the bad one.
(a) If only the week battery is connected to the starter, what is the current through the starter?
(b) Now if the other car is connected using the cables, what is the current through the starter?
Note: You will need to set up the problem with Kirchhoff's rules to do part (b), and in this problem you DO need to solve the equations and find the current through $$R_S$$.

problem 3 follow up to the car jump starting example in class rj r1 r2 rs rj e1 e2 the above circuit represent the situation of jump starting a car with a weak battery the right part 60118

Added by Connie C.

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