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(1) Analyze the circuit below:
10Ω
30 V
15 V-
V3
Figure 1: This circuit runs Wall-E
(a) What is the current through each resistor if V3=0V? What direction does the current
flow in each branch?
(b) What is the power dissipated on each circuit element? How much energy is lost by
the 102 resistor in a span of 25 seconds?
(c) What voltage does V3 need to be so that the current through the middle branch is
zero?

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