If the light bulb is short circuited, does the voltmeter and ammeter show the number?

If the light bulb is short circuited, does the voltmeter and ammeter show the number?


This depends on the specific connection of the circuit. If there is only one light bulb in the circuit, the ammeter and the light bulb string, and the voltmeter measures the voltage of the light bulb, then in this circuit, if the light bulb is short circuited, the voltmeter will show zero, and the ammeter will be burned, that is, zero
I don't know if there are any other components in the circuit. If there are any, it depends on the specific connection



Parallel circuit, small bulb short circuit or open circuit ammeter voltmeter what phenomenon


Parallel circuit, a short circuit, that is, the power supply is short circuited, the current will return directly from the positive to the negative, without passing through any electrical appliances, therefore, the current is zero
Voltmeter, equivalent to measuring wire voltage, also 0
If there is an open circuit, that is, an open circuit, another circuit is normal. At this time, the voltmeter is normal, and the ammeter depends on which electrical appliance's current is measured. If it is on the main circuit, there is an indication; if it is on the disconnected Road, there is no indication. If it is on the normal branch circuit, there is



Short circuit, open circuit, change of ammeter and voltmeter
It's about the changes in the numbers


Short circuit: the voltmeter has no indication and the ammeter is burnt out
Because the current flows away from the short circuit without passing through the voltmeter, at the same time, the current is too large, which causes the ammeter to burn out
Open circuit: the voltmeter shows the power supply voltage, but the ammeter does not show the number
Because the broken circuit is equivalent to no direct flow from the voltmeter, and because the resistance of the voltmeter is too large, almost no current passes through, so the ammeter has no indication



If there is an open circuit or short circuit in the series circuit, what will the indication of voltmeter and ammeter change?
It's all in series
1. If the electric appliance is used to open the circuit, will the voltage indication become larger and close to the power supply voltage?
2. If the electric appliance is used to open the circuit, will the current expression number increase or remain unchanged?
3. If the electric appliance is short circuited, will the voltage indication become larger and close to the power supply voltage?
4. If the electric appliance is short circuited, will the number of current expressions increase or remain unchanged?
5. If two resistors and one resistor of the measured voltage are short circuited, will the voltage measure the voltage of the power supply?
If not, why not?
Answer the questions one by one, and clearly analyze them
Which prawns answer well... + + + + + + + + + + +
PS: I only have the circuit level of grade two in junior high school!


1, the voltage indication number will be larger and close to the power supply voltage
2. The circuit is open, that is, there is no current passing through, and the current is 0
3. In case of short circuit, the voltmeter shows 0
4. Short circuit, the ammeter shows the maximum
5, no, the voltmeter shows 0