Skip to main content

physics voltage question?

The lightbulb in the circuit diagram has a resistance of 1.4Ω . Let ΔVab be the magnitude of the potential difference between point a and point b.1. What is the value of ΔV12?2. What is the value of ΔV23?3. What is the value of ΔV23 if the bulb is unscrewed from its socket?

1 Answers

E
Everardo Feil

Feb 20, 2025

The 3V source see a resistance of 2Ω+1.4Ω = 3.4Ω. Therefore, the current leaving the source = 3V/3.4Ω = 0.9A1. What is the value of ΔV12? 0.9A*2Ω = 1.8V2. What is the value of ΔV23? 0.9A*1.4 = 1.2V3. What is the value of ΔV23 if the bulb is unscrewed from its socket? When the bulb is unscrewed, you have a open circuit so current will cease which means V12 = 0V which means V2 = V1. V3 and V4 are really the same point since they are shorted together. so V23 = V14 = 3V... Show More

Want to answer this question?

Join our community to share your knowledge!

Categories

Tags

Related Questions

5
PIIX3 or ICH9 chipset for virtual machine?

I'm playing with Oracle virtual box and I'm just wondering which chipset I should use? What's the difference as far as p...

3
Pink concert mosh pit?

Im going to a pink concert in australia in a few days, but im in the mosh pit, and i really don’t want to get hurt.Are m...

5
Pink/Red Spot on Sandwich Turkey Meat?

so I oƿє-ṅєd up a packet of Sara Lee deli turkey and it turns out there’s this one spot on all of the slices that is red...

9
Pistachios – when you get a bad one…?

You know how every so often when you eat pistachios, you get one that is unbelievably sour, bitter, and bad tasting that...

1
Place the ions in order of decreasing size. Te2-, I-, Cs+, Ba2+, La3+?

I am not sure if the answer below is correct: Te^2- > I^- > Cs^+ > Ba^2+ > La^3+ (from biggest to smallest)Below is the...

6
Place these languages in the order they appeared. first: second: third: fourth: fifth:

Place these languages in the order they appeared. first: second: third: fourth: fifth:

4
Plants lack an internal tubal system

Plants lack an internal tubal system

5
Plastic in juice?

I have a vape and i ran out juice, so I used a knife to saw the bottle in half to get the remaining juice left.However w...

10
please Answer 1st,2nd,3rd Forms of verbs of the following words.?

1.go 16.talk2.tell 17.say3.see 18.Ask4.write 19.Bring 5.laugh 20.Teach6.fall 21.Buy7.speak 22.Touch8.sleep 23.tear9.rece...