- #1
Kirchoffs current law. Someone check to make sure its correct?
AI Thread Summary
The discussion focuses on verifying Kirchhoff's Current Law (KCL) using a circuit analysis involving currents Ia, Ib, Ic, and Id. It is established that in a series configuration, Ic and Id are equal in magnitude but opposite in direction. The calculations show that if Ia is 3A and Ic is 1A, then Id must be -1A, leading to the conclusion that Ia equals Ib at 3A. However, an alternative analysis suggests that when applying KCL at a node with Ia and Ic entering and Ib leaving, the total current should equal 4A. The conversation confirms the correct application of KCL, highlighting the importance of consistent current direction and magnitude in circuit analysis.
Kindly see the attached pdf. My attempt to solve it, is in it.
I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction.
I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance)
My thoughts for the first case , one of them must be 12 volt while the other is 0
The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Here is what I tried
This question was actually asked in one of our engineering entrances.
The answer was 1D.
My teachers say that we have to use μₘ/fₘ to get to this answer. I cannot understand why. I'll be really glad if you could tell me the exact definition of power (numerically) that works in all scenarios.
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