9:48 AM Thu Mar 7 Ll 7.IZ Module 3 - Homework MCQs and FRQs.pdf Unit 3 Progress Check: MCQ 3s. 36. = R The circuit shown above consists of a resistor 2 and capacitor C' in series with a battery V' and a switch. The switch is initially open. A student wishes to measure the potential difference across the resistor, but the voltmeter has a much lower resistance than ideal. Which of the following indicates how the lower resistance will affect the voltmeter's ability to correctly measure the potential difference across the resistor immediately after the switch is closed and explains why? (A) It will have no effect because no current will be flowing through the circuit because of the capacitor. It will have no effect because the capacitor will store the charge of the circuit, negating the effects of the voltmeter. (B) i (C) Itwill have no effect because the resistor will have the same potential difference as the battery V| L (D) It will reduce the measured potential difference because less current will flow through the circuit. (E) It will increase the measured potential difference because more current will flow through the circuit. A simple series circuit consists of a switch, a 10 V battery, a 5 pF capacitor, and a 1000 (2 resistor. The circuit's switch is closed, and steady-state conditions are reached. The following two measurements are made: the time for the capacitor to completely charge and the potential difference across the capacitor. One of the circuit components is replaced with one of a different value, and the experiment is repeated. In the second experiment, it takes longer for the capacitor to charge, and the capacitor has the same potential difference across its plates after being completely charged. Based on these data, which of the following correctly identifies the new element in the circuit, and provides justification for that choice? (A) A 20V battery, because charging the capacitor takes longer. (B) A 20 pF capacitor, because the potential difference stays the same. B) A 20 nF capacitor, because charging the capacitor takes longer. /| (D) A 500 2 resistor, because the potcntial diffcrence stays the same. (E) A 500 Q resistor, because it takes longer to charge the capacitor. ) 5 Calendar D To Do Q NelahylerN il 15 |\\__/| Inbox 9:48 AM Thu Mar 7 95%