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1. What causes the algebraic sum of the currents (signs included) flowing into each of the four junctions NOT equal to zero?

2. What causes the algebraic sum of the EMFs in each closed loop NOT equal to the algebraic sum of all the IR drops in each loop?

For the first question, I thought that if the direction of the current flow is not maintained, like clockwise or counter clockwise, then the sum is not equal to zero

For the second question, I don't really know, I'm thinking that the circuit is not closed properly?

Thank you in advancing for helping me!

2. What causes the algebraic sum of the EMFs in each closed loop NOT equal to the algebraic sum of all the IR drops in each loop?

For the first question, I thought that if the direction of the current flow is not maintained, like clockwise or counter clockwise, then the sum is not equal to zero

For the second question, I don't really know, I'm thinking that the circuit is not closed properly?

Thank you in advancing for helping me!

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