For this problem concerning Kirchhoff 's junction rule and loop rule, refer to the figure. Concepts: (i)
Question:
(i) Notice that there are two loops, labeled 1 and 2 in this circuit. Does it matter that there is no battery in loop 1, but only two resistors? Explain.
(ii) The currents through the three resistors are labeled as I1, I2, and I3. Does it matter which direction, left-to-right or right-to-left, has been chosen for each circuit?
(iii) When we place + and - signs on the ends of each resistor, does it matter which side is + and which is -?
(iv) When we evaluate the potential drops and rises around a closed loop, does it matter which direction, clockwise or counterclockwise, is chosen for the evaluation?
Calculations: Use Kirchhoff 's junction and loop rules to determine the currents through the three resistors.
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