Voltage Distribution in a Potential Divider Circuit

AI Thread Summary
In a potential divider circuit, moving the contact X towards point P maximizes the potential difference across the divider. However, confusion arises regarding the impact on connected bulbs, particularly lamp 1. The voltage at node P and the voltage on the slider X when at P are critical to understanding the circuit's behavior. Clarification is sought on the voltage across lamp 1 and the differences between each side of it. Understanding these voltage values is essential for solving the problem accurately.
Muhammad Danish
Messages
70
Reaction score
7

Homework Statement


upload_2018-5-18_22-49-21.png


Homework Equations

The Attempt at a Solution


When we will move the contact X towards P, the potential difference should be maximum across the potential divider. I work out A as my answer but I think it is wrong.
 

Attachments

  • upload_2018-5-18_22-49-21.png
    upload_2018-5-18_22-49-21.png
    8.9 KB · Views: 1,120
Physics news on Phys.org
Muhammad Danish said:
I work out A as my answer but I think it is wrong.
Yes, that is incorrect.
Muhammad Danish said:
When we will move the contact X towards P, the potential difference should be maximum across the potential divider.
True, but how does this affect the bulbs? What is the potential difference across lamp 1 when you connect X to P?
 
cnh1995 said:
Yes, that is incorrect.

True, but how does this affect the bulbs? What is the potential difference across lamp 1 when you connect X to P?
This is where my confusion is..
 
Muhammad Danish said:
This is where my confusion is..
@cnh1995 Can you guide me further?
 
Let's say the battery is 12v.
What is the voltage at node P?
What is the voltage on the slider X when it's at P?
What is the voltage on each side of lamp 1?
What is the difference between each side of lamp 1?
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Can a reed switch use a wheatstone bridge/potential divider?
Replies
1
Views
2K
Write boolean expression describing this circuit
Replies
4
Views
1K
An interesting GCSE question: Why are electric lamps connected in parallel in house wiring?
Replies
14
Views
465
Ohm's Law - Finding Source Voltage
Replies
3
Views
1K
EMF and how it's related to Potential Difference
Replies
1
Views
1K
Determining Inductance L in an LC Circuit
Replies
5
Views
2K
Solving series-parallel circuits
Replies
1
Views
1K
LC oscillations - two capacitors and an inductor
Replies
15
Views
593
Current Flow Through Lamps in Circuits
Replies
9
Views
2K
Is Bulb A Brighter in a Parallel Circuit Due to Potential Difference?
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top