PhysicsLAB AP Free Response Question
2008 C2 E&M

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In the circuit shown above, A and B are terminals to which different circuit components can be connected.
 
(a) Calculate the potential difference across R2 immediately after the switch S is closed in each of the following cases.
 
 i. A 50 Ω resistor connects A and B.

 ii. A 40 mH inductor connects A and B.

 iii. An initially uncharged 0.80 μF capacitor connects A and B.

 
(b) The switch gets closed at time t = 0 . On the axes below, sketch the graphs of the current in the 100-ohm resistor R3 versus time t for the three cases. Label the graphs R for the resistor, L for the inductor, and C for the capacitor.
 
 




 
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