Finding the currrent of the circuit

  • Thread starter Thread starter yjk91
  • Start date Start date
  • Tags Tags
    Circuit
Click For Summary
SUMMARY

The discussion focuses on calculating the current in a circuit with a resistor value of R = 1 Ω and a voltage of V = 12 V. When the switch is closed, the resistors in the circuit must be analyzed to determine their configuration. The bottom resistor (1 Ω) and the 5 Ω resistor are in parallel, as are the top resistor (1 Ω) and the 5 Ω resistor. The correct approach involves calculating the equivalent resistance of these parallel configurations before applying Ohm's Law to find the total current drawn from the battery.

PREREQUISITES
  • Understanding of Ohm's Law (V = IR)
  • Knowledge of series and parallel resistor configurations
  • Ability to calculate equivalent resistance in parallel circuits
  • Familiarity with basic circuit analysis techniques
NEXT STEPS
  • Study how to calculate equivalent resistance in parallel circuits
  • Learn about series and parallel combinations of resistors
  • Explore Ohm's Law applications in circuit analysis
  • Practice problems involving circuit current calculations with varying resistor values
USEFUL FOR

Students studying electrical engineering, physics enthusiasts, and anyone looking to enhance their understanding of circuit analysis and current calculations.

yjk91
Messages
73
Reaction score
0

Homework Statement


What is the current in the circuit shown in the figure for the following? (Let R = 1 Ω and V = 12 V. Calculate the total current drawn from the battery.)
http://www.webassign.net/bauerphys1/25-p-048-alt.gif

1. what is the current when the switch is closed



The Attempt at a Solution


i had to find the current when the switch is open which is easy because it's just two series which are parallel which turn into one series

but when it's closed it is really confusing I've tried to do it several ways but i cannot determine which way i can do it. i tried adding the R1 and 5 ohms first using parallel but it wouldn't work. can you tell me a way to add the resistors?
thank you
 
Physics news on Phys.org
When it's closed, the bottom R and 1 are in parallel. Same as top R and 5. Then add up their resistances.
 

Similar threads

Why do the headlights on the car become dim when the car is starting?
  • · Replies 4 ·
Replies
4
Views
2K
RCL series circuit analysis: Damping Constant
  • · Replies 1 ·
Replies
1
Views
951
Not a typical RL circuit...
  • · Replies 4 ·
Replies
4
Views
1K
Ohm's Law - Finding Source Voltage
  • · Replies 3 ·
Replies
3
Views
2K
How is the slider connected to the switch?
  • · Replies 6 ·
Replies
6
Views
1K
Current through an inductor as a function of time
  • · Replies 10 ·
Replies
10
Views
1K
Determining Current Direction in a Charging RC Circuit
  • · Replies 1 ·
Replies
1
Views
2K
Why Do Capacitors Behave Differently in Series and Parallel Configurations?
  • · Replies 20 ·
Replies
20
Views
2K
Current through a circuit when the key is open
  • · Replies 42 ·
2
Replies
42
Views
6K
Homework assignment that I was able to solve using EDO, but need to use Laplace now
  • · Replies 5 ·
Replies
5
Views
1K