Engineering, 13.02.2022 05:10 CassidgTab

For these problems I feel like I am close but i don't quite fully understand them yet. For calculating R_AB, I am not sure how the A and B terminals affect the whole circuit. Ive calculated the resistance of the circuit as a whole as if terminals A and B were not even there and calculated the resistance as if the resistances were in parallel from node A and node B. But i still get the wrong answer.

For the second question when calculating the solution for part B, I am also not sure how to calculate the resistance added by the ammeter. I know how to calculate the resistance of the shunt resistor though, how do i calculate how much resistance was added to the circuit. I calculate 50 ohms every time by dividing 150mV by 3mA.

Any help and direction is greatly appreciated

For these problems I feel like I am close but i don't quite fully understand them yet.

For calcul

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