Calculate the current i3 in the following configuration

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SUMMARY

The discussion focuses on calculating the current i3 in a circuit with two batteries and resistors. The given values are EMF_1 = 6 V, EMF_2 = 3 V, R_1 = 70 Ohm, and R_3 = 20 Ohm. The user initially struggled with applying Ohm's Law (V=IR) due to the presence of multiple EMFs but successfully resolved the problem. The solution involves correctly analyzing the circuit configuration to determine the current flowing through i3.

PREREQUISITES
  • Understanding of Ohm's Law (V=IR)
  • Basic knowledge of circuit analysis
  • Familiarity with series and parallel circuits
  • Ability to interpret circuit diagrams
NEXT STEPS
  • Study series and parallel circuit configurations
  • Learn about Kirchhoff's Voltage Law (KVL)
  • Practice problems involving multiple EMFs in circuits
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Homework Statement


Calculate the current i3 in the following configuration:


http://capa-new.colorado.edu/msuphysicslib/Graphics/Gtype57/prob06_kirch.gif
EMF_1 = 6 V
EMF_2 = 3 V
R_1 = 70 Ohm
R_3 = 20 Ohm

Homework Equations


I know that V=IR so I=V/R
but because there are 2 batteries i am just having a little bit of a problem.


The Attempt at a Solution


tried adding up the batteries but it does not seem to be working
 
Physics news on Phys.org
nm, i figured it out
 

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