How to Calculate Voltage and Current in a Circuit with a Diagram?

  • Thread starter Thread starter Busybee12
  • Start date Start date
  • Tags Tags
    Circuits Diagram
AI Thread Summary
To calculate voltage and current in the given circuit, it's essential to identify the series and parallel components. The voltage at points Y and Z can be determined using Ohm's Law (V=IR) and by simplifying the circuit where necessary. Combining parallel resistors into a single equivalent resistance can simplify calculations for voltage and current. After determining the equivalent resistance, apply the formulas to find the current through each resistor. Understanding the circuit's configuration is crucial for accurate calculations.
Busybee12
Messages
5
Reaction score
0

Homework Statement



For the circuit shown below, determine
i) The voltage (V) at points Y and Z.
ii) The current through each resistor.

Homework Equations



V=IR, I=V/R, R=V/I

The Attempt at a Solution



For (i) do I have to split into series and parallel?
 

Attachments

  • ScreenHunter_09 May. 22 14.55.jpg
    ScreenHunter_09 May. 22 14.55.jpg
    22.1 KB · Views: 457
Physics news on Phys.org
Busybee12 said:
For (i) do I have to split into series and parallel?
The circuit is already split into series and parallel. To make some calculations in (i) easier, you'll want to [temporarily] combine some of the parallel paths into a single resistance.
 
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