All Questions
Tagged with electric-circuits short-circuits
103
questions
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2
answers
53
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Zero Shunt Resistance in Ammeter
To reduce the resistance of ammeter, we attach a shunt resistance in parallel to the galvanometer. Also, this allows galvanometer to measure larger currents even though it has less value of the full ...
- 64
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3
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116
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How would you find the equivalent resistance of these circuit diagrams given a wire with no resistor?
I understand how to combine resistors to find their equivalent resistance, but I am completely oblivious as to how to remove resistors that are shorted. For example, in the first image, there is a ...
- 25
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3
answers
83
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Why There's No Current Flowing in This Part of The Circuit?
One time, in my Physic Class my professor ask us, "How much current is flowing in this circuit?" and everyone answer $5$ Ampere (Because, it looks like the resistor is arrange in the series ...
- 9
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55
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Is there any current flow from a battery to the earth?
Suppose I connect the + (or -) pole of a battery to the earth with a conducting wire, will there be a current flow?
As I understand, the Earth is considered to be "neutral" in the sense that ...
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4
answers
171
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Short circuit vs circuit with load
I'm studying about short circuit phenomenal. From the information I have searched, given a small battery (AAA), if we connect the 2 poles of the battery directly with a wire, without load (i.e. the ...
2
votes
5
answers
146
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How would current be distributed among two parallel paths of zero resistance?
In an ideal circuit with two wires in parallel, if one path has zero resistance and another has a nonzero resistance, all of the charges will flow through the wire with zero resistance (if I ...
- 21
1
vote
1
answer
72
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Mismatching Batteries of Different Voltages
Consider connecting two batteries of different voltages $x$ and $y$ in parallel. Considering a series circuit, the total voltage would be $x+y$. However what happens in this parallel case?
From my ...
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votes
1
answer
131
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How exactly does an inductor behave in a circuit after reaching its steady state?
I was solving this question in my coursebook and was not able to understand it conceptually. Though I did understand the mathematical approach to it.
Now I understand that when the rod is given an ...
- 51
3
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6
answers
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Why does a short circuit occur? [duplicate]
For example, if you have a battery and you connect both ends with a short circuit with zero or low resistance, why does it short circuit? What causes this internally? What are really happening with ...
- 139
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38
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Doubt about short circuit [duplicate]
I have been asked to find the equivalent resistance in the following circuit. However, is the circuit valid, as a zero resistance wire is connected between 2 different potentials?
Also, how to ...
- 428
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votes
1
answer
104
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Are short circuits a type of parallel circuit?
Since short circuits have >1 electrical pathways for current to flow, the unintended and intended pathway, I would assume that short circuits are parallel circuits and therefore current is ...
- 15
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vote
4
answers
204
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Short circuit doubt [duplicate]
Short circuits occur when a live wire comes in contact with a neutral wire due to poor insulation and stuff, and the main gist of this word short circuit is the fact that the wire gets heated up so ...
- 85
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38
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Short circuit on one branch of parallel connection [closed]
I don't understand how that extra branch that starts in (a) affects the circuit. If R4 did not exist, then r2 and r3 would be ignored but now you have to take into account the (b) knot. How can we ...
0
votes
1
answer
81
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Why short circuit doesn't takes places in a homopolar motor?
In a homopolar motor we directly connect copper wire to a battery without any resistance with a magnet in bottom, so why doesn't a short circuit takes place?
0
votes
1
answer
133
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KVL in short circuit with 0 resistance [duplicate]
According to KVL, $\sum \epsilon = \sum RI$ in any closed loop.
However, in an ideal circuit with no resistance, R is $0$, and hence $\epsilon$ must also be $0$.
Does KVL not apply in this case?
- 15