Elementary 2 Open circuit, short circuit, open circuit in electricity

A short circuit is when there is no electrical power in the entire circuit, so once it is turned on, the current in the circuit is extremely large.

An open circuit is when the circuit is not open and there is no current.

The path is a normal circuit, with power supply, electrical appliances, and current after being turned on.

An open circuit is when the switch is disconnected and there is no current.

An open circuit is basically the same as an open circuit.

The two ends of the power supply are directly connected by wires without passing through any electrical equipment, which is called a short circuit. In the event of a short circuit, a very large current will occur in the circuit, which is called a short circuit current. When the circuit is short-circuited, the short-circuit current may increase to far exceed the allowable current limit of the wire, causing the wire to heat up violently, and even burn the electrical equipment, leading to disasters.

An open circuit is also known as an open circuit.

The path refers to the current flowing through the power supply, switches, electrical appliances, wires to form a closed circuit, open circuit means that the circuit is not closed, and the current is not passed.

First of all, the meaning of open circuit and open circuit is the same, that is, the circuit does not form a loop, there is a place where there is a disconnection, and the current cannot flow from the positive pole of the power supply to the negative pole.

A short circuit means that in the circuit, the current does not pass through the load, and the current flows directly from the positive electrode to the negative electrode, so that the electricity in the circuit is infinitesimal and close to zero, and the current is infinite, which will burn out the power supply.

"Open circuit" means that in the circuit, the line does not form a closed loop, such as the line has no load, the switch is not closed, and the circuit is in a disconnected state.

"Short circuit" refers to the circuit, the current does not pass through the load, the power supply is directly or indirectly connected together, when the switch is closed, the line current is infinite, the wire exceeds the overload capacity temperature and increases sharply until it burns out or the overload switch is disconnected, which poses a threat to the wire and electrical appliances!!

"Circuit breaking" refers to the disconnection of the wire at a certain position of the line, and when the switch is closed, due to a certain position has been disconnected, no closed loop has been formed, and the electrical equipment cannot work

An open circuit means that in the circuit, the circuit does not form a closed circuit, for example, a battery is connected to two light bulbs in parallel, and the positive (or negative) pole of the power supply is disconnected, and both bulbs are not lit.

Circuit breaking refers to the disconnection of the wire at a certain electrical equipment in the circuit, for example, a battery is connected to two light bulbs in parallel, and one light bulb is disconnected one foot, the light bulb is not lit, and the other light bulb is still bright.

Short circuit refers to the circuit in which the current does not pass through the electrical equipment, for example, a battery is connected to two bulbs in series, and the two legs of one bulb are connected with wires, the bulb is not lit, and the other bulb is still on.

An open circuit means that in the circuit, the circuit does not form a closed loop, the switch is not closed, and the circuit is in a disconnected state.

Short circuit: In layman's terms, there is a circuit that is directly connected to the positive and negative poles by wires, and there is no electrical appliance on this path, and the current is infinite.

An open circuit is an open circuit that is not connected.

A normal circuit knows, right? This is the most basic.

And then. The switch is turned off, so the circuit is not working. This is the open path.

In addition to the switch being turned off, there are other places where the circuit is broken, such as a broken wire. This is a broken circuit.

The wires are connected without passing through the electrical appliances, such as the neutral line and the live wire. It's a short circuit.

Hello, first of all, you need to understand two concepts:

1. Open circuit: A circuit that is disconnected somewhere in the circuit is called an open circuit.

2. Short circuit: short circuit of distribution electrical appliances and short circuit of power supply. A short circuit in an electrical appliance means that there is no current passing through the electrical appliance; A short circuit in the power supply is to connect the wires directly to both ends of the power supply.

Again, you need to sort out the characteristics of each of them.

Open circuit: In a series circuit, if one place is disconnected, there is no current in the entire circuit; And in a parallel circuit, there is a disconnection somewhere, and there is a current somewhere else.

Short circuit: A short circuit in a power supply will burn out the power supply, and a short circuit in an appliance is simply that the appliance will not work (equivalent to connecting a wire to both ends of it).

Finally, the circuit is analyzed and the circuit diagram is viewed in a "walking" manner. That is, starting from the positive pole of the power supply and walking around according to the requirements to see if it can be passed, plus the above knowledge, you can simply complete the circuit problem.

1.Short circuit is that there is only a wire connection between the two poles of the power supply without load, it is a complete closed circuit, and the current does not pass through the point user and directly returns to the negative pole of the power supply, at this time the current is huge, and it is easy to send out high heat and cause danger.

2.An open circuit is when the switch is not closed and no current is passing through the circuit.

3.Judgment of open circuit: If the electrical appliances in the circuit do not work (often the light is not on), and there is no current in the circuit, the circuit is open.

4.Judgment of short circuit: the part of the electrical appliances in the series circuit or the series part can not work normally, and the other parts of the electrical appliances can work normally, then the part that cannot work normally is short-circuited; The voltmeter is connected in parallel with each part respectively, and the voltage of the wire part is zero to indicate that the wire is normal, if the voltage at both ends of a certain electrical appliance is zero, the electrical appliance is short-circuited.

1. Open circuit refers to the circuit state when there is no current passing between two points in the circuit or when the conductor with a very large impedance value (or resistance value) is connected.

2. The path is the circuit that is connected everywhere in the circuit. The path is capable of forming a closed current path through which current passes through the circuit. Pathways are a fundamental concept in electricity.

3. Short circuit refers to the short circuit or part of the circuit that is shorted. If the load and the power supply are connected together by wires, it is called a short circuit, the current provided by the power supply during the short circuit will be much larger than the current provided by the path, and the short circuit is generally not allowed, if the short circuit is serious, the power supply or equipment will be burned out.

An open circuit is an open circuit, and the wires are broken. For example: Jane rushed into ambush a road and dug a deep ditch!

A short circuit is a connection of things that should not be connected, just as a road starts from A, walks around and returns to point A. It's a loop! This is called a short circuit.

The line of fire and the change are connected to the bridge and are short-circuited.

1. An open circuit is an "open circuit", that is, the circuit is disconnected, the wire is broken, or the wiring point is opened. In a word, broken.

2. Circuit opening means that the circuit is "short-circuited", that is, the power supply, or equipment, or electrical appliances are directly "connected" by conductors such as "wires". This is the open circuit.

When an open circuit is opened, the line voltage does not change. The power supply voltage is as much as it is, and the current in the line is zero. Because the circuit is "broken".

When the circuit is opened, the line voltage is close to zero and the current is almost infinity! According to Ohm's law, current is equal to voltage divided by resistance. That is, the current is equal to the supply voltage divided by the resistance of the wire, and the resistance of the wire is basically zero, so the current is almost infinite.

This is an impermissible fault phenomenon and is very prone to fire.

Whether it is an open circuit or an open circuit, the "resistance" does not change. The resistance depends on the equipment itself, for example, the resistance of an electric furnace depends on the size of the electric furnace itself.

I don't know if I'm satisfied. I hope it helps.

The voltage at the end of the open circuit is normal, the lower end is zero, the resistance is normal, the upper and lower infinite, the current is normal, the current is none, the short circuit is not voltage, the current resistance is small, and the general short circuit burns the fuse and drops.

In physics, an electric current that is turned on directly without passing through an electrical appliance is called a short circuit.

When the circuit does not close the switch, or the wires are not connected properly, or the electrical appliances are burned out or not installed properly, that is, the entire circuit is disconnected somewhere. A circuit in this state is called an open circuit.

Open circuit: also known as open circuit, (but there is also a difference, open circuit, is that the electric key is not connected; Broken circuit is not known somewhere that is not connected. ) means that the current in the circuit is zero because the resistance is too large due to disconnection in a certain part of the circuit, and the current cannot pass through normally.

The voltage at both ends of the break point is the power supply voltage, which generally does not damage the circuit. For example, it is possible that the wire is broken, or the electrical appliance (such as the filament in the light bulb) is disconnected from the circuit, etc.