How Do You Verify Calculations in a Parallel Circuit Problem?

AI Thread Summary
To verify calculations in a parallel circuit problem, first ensure the total voltage (Vt) is correctly identified, which is 50V in this case. The total resistance (Rt) should be calculated using the formula for parallel resistors, resulting in 117.27Ω. The total current (It) is determined to be 0.42A, which can be checked against Ohm's law. Power (Pt) is calculated as 42V, but clarity on its derivation is needed. Confirming these values through established circuit equations and resources can help validate the results.
Tedh
Messages
1
Reaction score
0

Homework Statement

Circuit.jpg


Here is a crappy sketch of it

Homework Equations


The Attempt at a Solution

I have already discovered

Vt=50v
Rt=117.27Ω
It=0.42A
Pt-42v

I'm not completely sure if its correct but, that's as far as i can get. The rest of it just confuses me.
 
Last edited:
Physics news on Phys.org
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top