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Voltage
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What would be the voltmeter reading if the lamp across which it is placed has a broken filament?
A voltmeter connected across the broken (open) filament of a light bulb reads the full voltage of the power supply whether the bulb is in a series or parallel circuit. -- In a series circuit with other components in series with the bulb, this reading tells you that at least one of the components is open, possibly the filament. -- In a parallel circuit with other components in parallel with the bulb, or with the bulb connected directly to the power supply, this reading tells you nothing ... the voltmeter reads the full power supply voltage whether the bulb is open or good. The voltmeter isn't a very helpful measurement to identify an open filament. An ohmmeter, with the power to the circuit turned off, is much more helpful.
What does the reading on a ammeter say when the switch is open?
An open switch in a circuit will stop all current flow so the ammeter should read zero amps.
If a switch is said to be open will a curcuit work?
A circuit will not work if a switch is open, be because it is not allowing the electricity to flow. Where as if it was closed it would give the electricity a sealed off path to flow through.
What is the continuity reading on a pressure switch in a power vent water heater marked normally open and -1.07PF when the blower is off?
If the pressure switch is marked as normally open, there should be continuity (zero resistance) through the switch when the blower is off. The reading of -1.07PF signifies the pressure setting at which the switch should close to allow the blower to turn on.
What a switch does in an electricial circut?
A switch in an electrical circuit is a device that can open or close the circuit, allowing or preventing the flow of electricity. When the switch is closed, it completes the circuit, allowing the electricity to flow, while when it is open, it interrupts the flow of electricity. This allows users to control the flow of electricity to a particular device or component in the circuit.
Measure the voltage across a voltmeter and a switch?
If the switch is closed (connected) the voltage across it will read 0V. If the switch is open (disconnected) the voltage across it could be anything, it just depends on what the voltage between the wires going into the switch is.
Which will normally have the larger resistance a voltmeter or an ammeter?
A voltmeter has the large resistance.The voltage across any component can be measured if & only if the terminals of that component will be open and this will we can acheiv if we connect the high resistance voltmeter across the open terminals of that component to measure the voltage.
How do you measure with Multimeter a motor or integrated circuit IC for failure?
The voltmeter function if the circuit is energized or the ohmeter function if looking for short or open circuits
When you measure voltage with a voltmeter you must break open the circuit and connect the meters test leads in series with the other circuit components?
Sounds more like you're trying to measure resistance...
Why must voltmeter be connected in parallel with the circuit component?
Because, by definition, a voltage is the difference in potential between two different points. So the voltmeter must be connected across those points in order to measure that voltage -i.e. in parallel with the points.B
How would I fix stuck brake lights on 1999 Nissan Pathfinder?
1: check the switch that the brake pedal opens and closes when you (respectively) release and apply the brake. using a voltmeter, verify that no voltage passes when the switch is open (brakes unapplied) - if there is continuity when there should not be, then the switch is the problem. you will have to be more specific beyond "stuck" if this does not help you.
What happens if the switch is open?
If the switch is open, current does not flow.
What does and open switch symbol look like?
open switch symbol
A bulb is connected to a battery having a potential difference of 6 V A voltmeter is connected across the bulb What is the reading on the voltmeter when the bulb burns out?
Assuming you're referring to a simple incandescent bulb . . .When the bulb burns out, the filament is open, and it is electrically no longer there.The voltmeter is then across the battery, which is open circuited, i.e. without a load.The meter measures the open-circuit voltage of the battery, nominally 6 V.
When the voltmeter is connected across the open in the circuit the meter will indicate a voltage equal to the?
The source voltage.
I replaced the old switch on the sealing fan with the new one and it dint work can you please tell me why?
1. No power coming to your switch. Check your circuit breaker. If it is tripped, you have a "short" somewhere in the circuit. You will have to isolate the circuit. If it's not tripped, go to step 2... 2. A bad switch - Which you already replaced. You might want to check (use a voltmeter) to see if you are getting incoming voltage on your switch. If you are, go to step 3. If there is no power, it means you have a broken wire somewhere in between the switch and the breaker panel. 3. An open wirefrom the the switch to the ceiling fan electrical box. Again, check by using a voltmeter to confirm that the wire on the ceiling fan is getting power when the switch is "ON". If you are getting power go to step 4... 4. Bad ceiling fan - Removed and replace. Note: An open neutral wire (white wire) can also be the cause of the problem. Consult an electrician if you are not sure what to do.
Used to open and close a circuit?
A light switch
