Electricity. It's very easy, that is, when there is a short circuit, does the voltmeter show the number and ammeter? Is it open circuit?

Electricity. It's very easy, that is, when there is a short circuit, does the voltmeter show the number and ammeter? Is it open circuit?

In case of short circuit, the voltmeter has no indication and the ammeter has
When the circuit is open, it is equivalent to the power supply, so the voltmeter has it and the ammeter does not

Using resistance and voltmeter to prove that the voltage sum of each part in series circuit is equal to the total voltage
There are several wires with known set resistance and a voltmeter
It is proved that the voltage sum of each part in the series circuit is equal to the total voltage
Oh, yeah, I'm sorry to have the power switch off --
Is it related to Ohm's law?

It has nothing to do with Ohm's law - just connect with the power supply - on the resistance string - the wire turns from R1 - (the circuit diagram should be like this -) actually winding the wire around the resistance - equivalent to the rheostat - and then - move the wire - because the voltage representation does not change - so part of the voltage equals the total voltage

What will happen to the voltmeter and ammeter when the bulb is short circuited or open circuited in the series circuit? (with resistance inside)

Set the faulty bulb as the measurement object
Short circuit: voltage indication is zero, ammeter has indication
Open circuit: voltage is equal to supply voltage, current is zero

Short circuit and open circuit in physics electricity
Open circuit and short circuit problems
There are two reasons for the open circuit
1. The voltmeter has no indication
2. The voltage indication is close to the power supply voltage
There are two reasons for short circuit
1. The bulb may still be on
2. The bulb may not be on (indicating that the bulb is short circuited)
3. The voltmeter may have indication (there is no short circuit and open circuit in parallel with the voltmeter)
4. The voltage indication may be zero (there is no open circuit and short circuit in the parallel part with the voltmeter)
Why? Isn't that contradictory?
Another reason for short circuit: any point in the short circuit can make the measuring pen light up, even if it is a channel, there will be current flowing through the circuit
Although the words in brackets are explained in synchronous quick search, I still can't understand them

First of all, you need to recognize what is short circuit and open circuit. Short circuit refers to a circuit in which a path can not pass through any resistance (including wire, ammeter as no resistance, voltage scale, bulb, etc.) and open circuit refers to the disconnection in the middle of the circuit, so that the circuit can not be connected. Those "reasons" are not the reasons, but the results, that is