This Free Response Question includes the following concepts: Circuit Diagram, Voltmeter, Resistance, Capacitance, Inductance, Potential Difference, Charge, and Electric Potential Energy.

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Link: AP Physics C 1998 Released Exam
The problem is on pages 166 - 167 of this pdf.
Their solution is on pages 208 - 209 of this pdf.
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Content Times:
0:27 Part (a)
1:24 Part (b)
2:17 Part (b) The equivalent resistance of the circuit
3:27 Part (c i)
4:06 Part (c ii)
4:49 Part (d)
5:56 Part (e i)
6:58 Part (e i) Comparing to Part (b)
7:32 Part (e ii)
8:03 Part (f)