Yes, but that's not main concern for me. (Maybe I should just attached another adequate picture.)
My question is, there is a magnet and a charge which moves relative to each other. In magnet's coordinate, force exerted on charge can be easily expressed via F = v x B. But how can I explain this...
Homework Statement
1. Circuit moves downward while cylinder magnet is fixed.
2. Cylinder magnet moves upward while circuit is fixed.
Gain emf in circuit.
Homework Equations
All those maxwell equations...
F=v x B
The Attempt at a Solution
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So first question is not that hard...
Ahh... I forgot about that. But one more question. Is this mean that if I remove ground in this circuit, than the gain of circuit will become 4? I think gain of circuit must be same whether ground exists or not, since calculation using KCL and KVL on other parts of the circuit will be same.
Homework Statement
So this problem is on Introduction to Electric Circuits 9th Edition (Richard C.Dorf)
This asks me to express the gain of this circuit Vo/Vs by terms of the resistance of R.
Homework Equations
KCL, KVL, some ideal OP AMP characteristics...
The Attempt at a Solution...
Inductor requires same current. Thanks! Now I think I can solve the equation... So does it mean that potential at A changes discontinuously from 24V to some other voltage when switch is opened? Does this instantaneous voltage change occurs in other circuits with switch?
After switch is opened, what I know is that I should set inductor's emf like L*di/dt then apply KVL. But I feel confused when I have to set initial potential at point A after switch is opened. After applying KVL with potential B=0, I can get a exact potential at point A. So my question will be...
Homework Statement
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https://postimg.org/image/6dbwajk91/
(Image inserted by moderator to make it visible in-post)
In the circuit the switch is closed for several seconds, then opened. Make a graph with the abscissa time in milliseconds, showing the potential of point A with respect to...
While I was studying with electric field about cylinder, I learned that for a very long cylinder, the electric field in the hollow of cylinder will be zero.
http://physics.stackexchange.com/questions/156789/electric-field-of-hollow-cylinder
However, I couldn't accept this intuitively, and...
But does 'extra(or deficient) number of electrons' can really tell the 'percentage of ionized atoms'? What about distribution? If all electrons are gathered on, exaggeratedly, one point of the balloon, can I really say that balloon has same 'percentage of ionized atoms' as another balloon which...
Homework Statement
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You have two inflated balloons. You rub them against your hair and hang them as shown in the figure. The length of the strings is 50 cm and the angle between them is 50°. For each balloon, what is the percentage of atoms that are ionized? Provide a rough estimate. You...