a.) Please find the current in each of the resistors. (Give only positive answer

Question

a.) Please find the current in each of the resistors.
(Give only positive answers. If you guessed any current directions wrong, use the correct ones moving forward.)

I1 =    mA
I2 =    mA

Also find the current flowing directly from/to battery #2:
mA
(Overall, is charge flowing onto it or off of it?)

b.) Rank the voltages for the labelled points b-d in order from lowest to highest.

b c d

b d c

c d b

c b d  

d b c

d c b

Now specify where the voltage of point 'a' ranks among them:

lower than any of them

larger than one of them only    

larger than two of them only

larger than all three of them

tied with one of them

Explanation / Answer

a) apply, KVL in lower loop,

e2 - I1*R1 = 0

==> I1 = e2/R1

= 5/105

= 47.6 mA (towrds right)

Apply, KVL in upper loop

e1 - e2 - e3 - I1*R2 = 0

I2 = (e1 - e2 - e3)/R2

= (7 - 5 - 3)/45

= 22.2 mA (downward)

current through the battery 2, = 47.6 + 22.2

= 69.8 mA

b) c d b

c)
lower than any of them

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