- #1
RoboNerd
- 410
- 11
The problem is above, I am having a hard time figuring out why the right answer for part F is "greater than."
Homework Equations
Ucapacitor = 0.5 * C * V^2
The Attempt at a Solution
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My problem is figuring out the logic in how the capacitor's energy would increase. Now, I know that because I have a resistor with a smaller resistance that the total current in the circuit will increase. That is not a problem.
The constant of the capacitor remains the same, and because the R1 and C are in parallel, they have the same voltage drop across it. The battery's voltage remains the same so by Kirchoff, I would have:
EMF - (Itot * R2New) - (votlage drop across R1 or capacitor). The EMF remains the same. Itot increases while R2NEW decreases, so I do not know if the voltage drop across the capacitor will increase or decrease.
Could anyone please help in figuring out this problem? Thanks in advance!