Comparing Brightness in Series and Parallel Lightbulb Circuits

Click For Summary

Homework Help Overview

The discussion revolves around comparing the brightness of lightbulbs in series versus parallel circuits. Participants are exploring how the arrangement of bulbs affects their brightness and the implications of adding resistors in different positions within the circuit.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants are questioning the assumptions about the current and voltage distribution in series and parallel circuits. There are inquiries about the effects of placing resistors in various locations and whether the type of bulbs influences brightness.

Discussion Status

The discussion is active, with participants providing insights and seeking clarification on the principles of current flow in series and parallel configurations. Some guidance has been offered regarding the relationship between current and brightness, but multiple interpretations are still being explored.

Contextual Notes

There is a focus on whether the bulbs are identical and the type of bulbs being used, which may affect the outcomes discussed. Participants are also considering the implications of resistor placement and its effect on ammeter readings.

IvaNMK
Messages
13
Reaction score
0

Homework Statement


How do the bulb's brightness compare?

Which ones will be brighter or dimmer?

What will happen if a resistor is placed before Bulb 2?
and
What will happen if a resistor is placed between Bulb 2 and 3?

Does it matter if i place the resistor before or after the ammeter? Will it read the same?

Homework Equations



P = IV

R = V/I

The Attempt at a Solution



I think all 3 bulbs will be at the same brightness because current and voltage are the same for both branches.

Thanks for help me out!
Circuit.jpg
 
Physics news on Phys.org
Are these identical bulbs? Are they standard incandescent bulbs?
 
TVP45 said:
Are these identical bulbs? Are they standard incandescent bulbs?

YES, they are.
 
When lightbulbs are in a series, they do not receive as much current as the lightbulb in the parallel series. In other words, the brightnest depends on which lightbulb will receive the current.
 
Kandycat said:
When lightbulbs are in a series, they do not receive as much current as the lightbulb in the parallel series. In other words, the brightnest depends on which lightbulb will receive the current.


you mean that lightbulbs in series receive less current than those in parallel?

Isnt that Current is the same throughout the whole series?

and Total current in parallel circuit is the sum of all currents flowing thru all branches?
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
1K
Replies
4
Views
2K
Replies
4
Views
2K
Replies
1
Views
3K
Replies
6
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 3 ·
Replies
3
Views
900
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 13 ·
Replies
13
Views
4K