Open CIrcuit and Short Circuit Troubles

Wed Aug 29, 2018 1:51 pm

Ohm's Law is useful for calculating I , V and R in a closed circuit with normal values. However, an open circuit or a short circuit causes trouble.

Open Circuits

An open circuit (Figure below) has a zero current I no current can flow between two terminals because R is infinitely high [/b] R=∞[/b]. It does not matter how much the voltage V is.

Figure:

In figure a, the circuit is normal with I of 2 A produced by 10 V applied across R of 5Ω. However, the resistor is shown open in Figure b. Then the path for current has infinitely high resistance and there is no current in any part of the circuit. The trouble can be caused by an internal open in the resistor or a break in the wire conductors.

Short Circuit

A short circuit has a zero resistance R, which causes excessively high current I in the short-circuit path because of no resistance.

In the Fig. 2a, the same normal circuit is shown with I of 2 A. In Fig. 2b however, there is a short-circuit path across R with zero resistance. The result is excessively high current in the short-circuit path, including the wire conductors. It may be surprising, but there is no current in the resistor itself because all the current is in zero-resistance path around it.

Figure:

Theoretically, the amount of current could be infinitely high with no R, but the voltage source can supply only a limited amount of I before it loses its ability to provide voltage output. The wire conductors may become hot enough to burn open, which would open the circuit. Also, if there is any fuse in the circuit, it will open because of the excessive current produced by the short circuit.
Note that the resistor itself is not likely to develop a short circuit because of the nature of its construction. However, the wire conductors may touch, or some other component in a circuit connected across the resistor may become short-circuited.

Tue Sep 04, 2018 12:10 pm

mayroon kaming kapit bahay na nakikikabit sa amin ng kuryente ng libre, is it related sa short circuit? tinatawag din kasi siyang 'jamper' means nakikikabit.

Tue Sep 04, 2018 12:12 pm

theory namin na kapag may naka jamper sa kuryente namin, nakikita yung effect sa tv, anong nangyayari sa circuit during nun? Smile

Tue Sep 04, 2018 12:14 pm

How can you test if the circuit is open or short without looking on the circuit diagram?

Wed Sep 05, 2018 2:39 pm

niella wrote:mayroon kaming kapit bahay na nakikikabit sa amin ng kuryente ng libre, is it related sa short circuit? tinatawag din kasi siyang 'jamper' means nakikikabit.

Share mo lang? Laughing

Joke. nope, short circuit is a term whenever an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion. In short, a circuit malfunction (hatid ng Wikipedia)

While a jumper is a short length of conductor used to close, open or bypass part of an electronic circuit.

Thu Sep 06, 2018 12:47 pm

Will an open circuit conduct electricity?

Fri Sep 07, 2018 8:30 am

DRAVEN wrote:

niella wrote:mayroon kaming kapit bahay na nakikikabit sa amin ng kuryente ng libre, is it related sa short circuit? tinatawag din kasi siyang 'jamper' means nakikikabit.

Share mo lang? Joke. nope, short circuit is a term whenever an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion. In short, a circuit malfunction (hatid ng Wikipedia)

While a jumper is a short length of conductor used to close, open or bypass part of an electronic circuit.

HAHAHA! Sige!
so ang sagot walang kinalaman ganon?

Fri Sep 07, 2018 8:47 am

There is also called a CLOSED circuit no? What is it?

Fri Sep 07, 2018 8:48 am

What causes to short circuit?

Fri Sep 07, 2018 8:49 am

How to diagnose open circuit component faults in resistive circuits?

Fri Sep 07, 2018 8:49 am

How to know if it's really short circuit?

Fri Sep 07, 2018 8:59 am

Passerby wrote:How to know if it's really short circuit?

excessive current flow in the power source through the 'short,' and may even cause the power source to be destroyed.

Fri Sep 07, 2018 9:00 am

Passerby wrote:How to diagnose open circuit component faults in resistive circuits?

the contemporary power of electrical tape! Laughing

Fri Sep 07, 2018 9:03 am

kc wrote:Will an open circuit conduct electricity?

Yes, open circuit means that the current is flowing, so yes.. why not try to touch it.. if it gave you pain then it does conduct electricity.

Fri Sep 07, 2018 9:04 am

niella wrote:

DRAVEN wrote:

niella wrote:mayroon kaming kapit bahay na nakikikabit sa amin ng kuryente ng libre, is it related sa short circuit? tinatawag din kasi siyang 'jamper' means nakikikabit.

Share mo lang? Joke. nope, short circuit is a term whenever an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion. In short, a circuit malfunction (hatid ng Wikipedia)

While a jumper is a short length of conductor used to close, open or bypass part of an electronic circuit.

HAHAHA! Sige!
so ang sagot walang kinalaman ganon?

Yes they don't connect at all Laughing

but why not do some further research, maybe you come up with a better answer Laughing

Mon Sep 10, 2018 4:40 pm

DRAVEN wrote:

kc wrote:Will an open circuit conduct electricity?

Yes, open circuit means that the current is flowing, so yes.. why not try to touch it.. if it gave you pain then it does conduct electricity.

The flow of electricity is called current. Metals are generally very good conductors, meaning they let current flow easily. Materials that do not let current flow easily are called insulators. ... If the loop is broken at all, it becomes an open circuit, and no current will flow.

Mon Sep 10, 2018 4:47 pm

DRAVEN wrote:

Passerby wrote:How to know if it's really short circuit?

excessive current flow in the power source through the 'short,' and may even cause the power source to be destroyed.

Short circuit means the wires are connected so there will be flow of current, but there is no voltage

Mon Sep 10, 2018 4:48 pm

Passerby wrote:What causes to short circuit?

Causes:
Faulty Insulation
Loose Connections
Household Pests
Appliances

Mon Sep 10, 2018 4:49 pm

How to pinpoint short circuit?

Mon Sep 10, 2018 4:49 pm

What are the dangers of short circuit?

Mon Sep 10, 2018 6:12 pm

niella wrote:

DRAVEN wrote:

niella wrote:mayroon kaming kapit bahay na nakikikabit sa amin ng kuryente ng libre, is it related sa short circuit? tinatawag din kasi siyang 'jamper' means nakikikabit.

Share mo lang? Joke. nope, short circuit is a term whenever an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion. In short, a circuit malfunction (hatid ng Wikipedia)

While a jumper is a short length of conductor used to close, open or bypass part of an electronic circuit.

HAHAHA! Sige!
so ang sagot walang kinalaman ganon?

Short circuit: wires that are not suppose to come in contact with each other
While,
Jamper: using wire, someone tapped in your line illegally, another connection siya, like an extension.

Mon Sep 10, 2018 6:15 pm

jhllmxxr wrote:What are the dangers of short circuit?

One that we should avoid, explosion.

Mon Sep 10, 2018 6:19 pm

jhllmxxr wrote:How to pinpoint short circuit?

These may take steps.
1. Power source should be turn off.
2. Check the receptacles or switches.
3. You should identify the appliance that causes short circuit but,
the issue could lie in the plug, the cord, or the appliance itself.

Mon Sep 10, 2018 6:23 pm

jhllmxxr wrote:

DRAVEN wrote:

kc wrote:Will an open circuit conduct electricity?

Yes, open circuit means that the current is flowing, so yes.. why not try to touch it.. if it gave you pain then it does conduct electricity.

The flow of electricity is called current. Metals are generally very good conductors, meaning they let current flow easily. Materials that do not let current flow easily are called insulators. ... If the loop is broken at all, it becomes an open circuit, and no current will flow.

Open, means no current flow.

Mon Sep 10, 2018 6:26 pm

Passerby wrote:There is also called a CLOSED circuit no? What is it?

Closed circuit is electric circuit through which current can flow in an uninterrupted path. Compare open circuit.

Means. There is a current flow.

Open CIrcuit and Short Circuit Troubles

Open CIrcuit and Short Circuit Troubles

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