Question

2. Consider the circuit shown at right, which is a variant of circuit IX from the tutorial. All bulbs are identical, and all batteries are ideal and identical. a. Suppose that bulb 1 were unscrewed from its socket. Would the absolute value of the potential difference between points X and Z change? Explain your reasoning. 2 с Y D z b. Suppose instead that battery C were removed from its battery holder. Would the potential difference between points X and Z change? Explain your reasoning. c. Two students are asked to rank the electric potentials at points X, Y, and Z in the original (unmodified) circuit. Student 1: 'I considered only the right loop. The electric potential at point Z is highest, because it is closest to the positive terminal of battery D. The electric potential at point Y is lowest, because it is closest to the negative terminal of battery D. Point X lies in between So Vz > Vx > Vy." Student 2: "I considered only the outer loop. Going from point Y to point Z, the electric potential increases by Vo, so AVyz = Vo. Going from point Z to point X, AVzx = Vo. So Vx > Vz > Vy." With which student, if either, do you agree? Explain your reasoning. d. Rank the potential differences across batteries C and D (ac and Van ) and bulbs 1 and 2 (bulbi and bulb 2) according to absolute value, from largest to smallest. If any of these potential differences are either the same or equal to zero, state so explicitly. Explain.

Answer 1

Soli- Х No, potential difference w X-2 will not change because 4. 14 X- Z across is connected 2 battery c If battery is removed from c then potential Between X-2 will change. because battery D potential will distribwe across bulb 1 and bulb 2.