B. Suppose that you were to repeat section II of this lab (the series circuit ca
ID: 1580663 • Letter: B
Question
B. Suppose that you were to repeat section II of this lab (the series circuit case) except that you added a fourth resistor in series with the original three. Would adding the fourth resistor cause the resistance of the entire circuit to increase, decrease, or stay the same as before? Explain your reasoning. 1. If the voltage across the power supply were held constant (say, at 6.0 V) while the fourth resistor was added, would the current through the power supply increase, decrease, or stay the same as before? Explain your reasoning 2. Suppose instead that you were to repeat section III of this lab (the parallel circuit case) except that you added a fourth resistor in parallel with the original three. How, if at all, would this change affect (i) the resistance of the entire circuit and (ii) the current through the power supply? Explain your reasoning. C.Explanation / Answer
B.
1. given that we add a resistor to the old ones in sereis
hence the net reisstnace of the whole curcuit =increases byt he amount of the value of this resistance
2. V = 6 V
so as net resistance increases, hence net current in the circuit decreases
as from ohms law
V = iR
C. i. adding a resistor in parralel reduces the overall resistance of the circuit as it provides an alternate path for current o flow
ii. as reisstance decreases, current through power supply increases
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