All Questions
22 questions
2votes
0answers
48views
If the number of electrons on an item gets doubled, does the electric charge of the item gets doubled as well?
If the number of electrons on an item gets doubled, does the electric charge of the item gets doubled as well? I know this looks like a very elementary question, but it caused me a huge confusion. I ...
- 129
-1votes
1answer
49views
What will Electric field be when the charge on negative side of Capacitor is changed? [closed]
One of the two parallel metallic plates is uniformly charged with charge $+q$, and the other one is charged with charge $-q$, the electric field between them is $E$. When the negatively charged plate ...
1vote
1answer
58views
Charge in a capacitor circuit [closed]
Firstly switch K is being closed and that one capacitor is being fully charged. Then the switch K is being opened again. What will be the difference of total charge in the system before and after ...
0votes
2answers
406views
Potential energy of parallel plate capacitor
I am trying to calculate the electrostrictive strain S on a parallel plate capacitor. For that, I use Young's modulus Y and the formula $$S = \frac{F}{AY}$$ Since the area A and the Young's modulus ...
1vote
1answer
57views
Why is my approach to this problem about charging an uncharged capacitor with a charged capacitor wrong? [closed]
This is the above mentioned problem : Using a battery a10 pF capacitor is charged to 50V and then the battery is removed. After that, a second uncharged capacitor is connected to the first capacitor ...
4votes
4answers
3kviews
Capacitor connected to battery at one end
I was recently solving a problem that involved a circuit with a capacitor that was connected to a battery at one end(the second plate just had a wire which didnt lead anywhere). In the solutions it ...
- 300
0votes
1answer
4kviews
Capacitance of Two Parallel Cylinders
I have some issues with the sign of the solution that I found. The problem is Two cylindrical conductors of radii R, separated by a distance $2d$, are charged with a potential difference $V$. Find ...
- 625
-1votes
1answer
108views
How to simplify such structures to calculate equivalent capacitance?
I am self studying electrostatics for competetive examinations but there is this series of questions demanding equivalent capacitance and I direly need a intuitive understanding of these situations.
1vote
2answers
4kviews
Charge flowing through switch when it is closed [closed]
The problem that I'm having is that the initial charges would have been 300 and 600 microcoulomb on the 3 and 6 microfarad capacitors respectively. But when the switch is closed there's some charge ...
0votes
1answer
260views
How to derive and write Kirchoff loop law for circuits including capacitors?
Consider a circuit like the one in the picture Where $V_0$ is an electromotive force. How do I write Kirchoff "loop law" for circuits like the one in picture (i.e. with capacitors)? Here is the ...
- 2,677
0votes
1answer
2kviews
Calculate the maximum voltage can be applied across multiple capacitor? [closed]
How to calculate the maximum voltage can be applied to this circuit before the capacitors broken. Each capacitors Voltage Rating is 60 V. My solutions: The right wire maximum is 60 + 60 + 60 = 180 V....
- 103
1vote
2answers
1kviews
Capacitors connected in series with the same $\Delta V$?
I have a doubt on the difference between series and parallel connected capacitors. Suppose that two capacitors $C_1$ and $C_2$ are charged at two potentials $V_1$ and $V_2$, then they are connected in ...
- 2,677
1vote
2answers
3kviews
Does charge of capacitor at constant voltage change after dielectric material is inserted?
I have a planar geometry capacitor, connected to a battery that supplies V volts. Initially there is vacuum/air in between both plates. Afterwards, some dielectric material is inserted in between both ...
- 19
0votes
1answer
149views
charge on the capacitors
When we connecting a capacitor to a battery of $V$ volts. After it is completely charged, it is disconnected from the battery, and if we connected to another capacitor. In this case, there is no ...
-2votes
1answer
421views
