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Q: Why is it advisable to open the switch when not taking reading?
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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.


Why do you get a voltage reading when the switch is turned off?

A: A switch is either on [ short] or off [ open ] Therefore when on there is practically no potential difference


When you connect a multimeter across an open component what is the reading?

That will depend on the setting of the meter switch and the circuit connected to the component (if there is one).


How do you turn of the reading lights on 2011 Sienna when the doors are open?

there should be a switch on the dash that overrides the courtesy lights, check the drivers manual.


What happens if the switch is open?

If the switch is open, current does not flow.


What does the word deck mean on odometer reading for a 07 Chrysler Sebring Convertible JXI?

Either the trunk is open, or the trunk ajar switch has failed.


What does and open switch symbol look like?

open switch symbol


What does a switch look like in circuit symbols?

---o-----o----- is a closed switch / / ---------o o------ is an open switch


Feed drops to zero volts when light switch is turned on back to 120 volts when turned off feeds fluorescent lights?

voltage is measured by voltagd drops. When a switch is open/ off there is a voltage difference between one side to the other. when the switch is on there is no drop from one side of the switch to the other. That is normal operation. If switch is on, and you get a voltage reading across the switch, the switch is bad.


What does it mean if a low pressure switch is checked on a residential heat pump with an ohm meter and there is no reading?

It means that the low pressure switch is open. Check the heat pump schematic to see if it is supposed to be an open or closed switch. Schematic electrical drawings are drawn in the de energized position. This means that when there is no voltage applied to the device, this will be the position of relays and contacts.


When a switch is on is a circuit open or closed?

If the switch is what is keeping the load from turning on, then yes, there is a voltage across the open switch.


How to Switch Between Open apps?

Switch between open apps: Alt + Tab