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no...... ideal open switch should have a resistance of infinity... the question should be a closed switch http://wiki.answers.com/Q/Will_an_open_switch_record_a_resistance_of_zero_ohms" but this is also false because any good conductor will have a small resistance the connecting wire resistance is exhibitted across the terminals of the switch
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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 know if the resistor is open and shorted?
I assume that the person asking the question meant "open OR shorted" as these are opposite terms. Most resistors will open when they are damaged. It is very rare to find one that is shorted. To determine if the resistor is open or shorted simply use a multimeter set to measure ohms. Place the leads across the resistor and it should read the resistance value of the resistor. If it measures max range of the meter (some digitals will display "OL") then the resistor is open. If it measures 0 or very close then it is shorted, which as mentioned above, is unlikely.
Why will a bulb not light if a switch is open in a circuit?
It will not work because it has to be closed so the electricity can go to the bulb.
How do you test a relay with a 9v battery?
You can test a relay with and without a 9 volt battery. If you apply 9 volts to it and it's sufficient to turn on the relay, the NO switch will close and then have continuity with common. If you don't apply voltage, the NO switch will be open and not have continuity with common. You can use these continuity and resistance checks to test a relay to see if it works.
What device will open or close the break in a electrical circuit?
A switch.
What are the ohms in an open device?
The resistance [ohms] of an open electronic device is, by definition, infinite, just like a perfect insulator.
What does 0 ohms indicate?
0 ohms on your ohm meter indicates an open circuit; no resistance to the flow of electricity.
What is the resistance when switch is open?
Nothing will happen to the resistance of the circuit. However, with the switch open, it will be 'seen' as having infinite resistance from the supply side.
What voltage would you expect to measure across closed switch?
Original Correct Answer:The voltage across an open switch should equal the supply voltage.More Detailed Answer:The above answer is basically correct. However, it may not be EXACTLY the supply voltage.This is counter-intuitive at first glance and confuses a lot of people, including electrical engineers. The reason is this. Voltage, Current and Resistance are all interrelated by Ohms Law. Voltage equals Current multiplied by Resistance.It is easy to think that since a switch is open, then you do not have current flow through the circuit. Thus, current times any Resistance is equal to zero volts because the current is equal to zero. Thus, by this logic, you would expect to find zero volts across the switch. In actuality this is true.But, when you insert you meter, you change the conditions of the circuit, and the following is the result.Let's say that you have a circuit with a resistance load like a heater, and a inductive load like a motor. The switch that powers these devices is open, thus their is no current flowing through the resistance or inductive loads.Now you put the meter across the open switch. When you do, you insert a very large resistance in parallel to the open switch. Why? Because to get volts, the meter measures current flow through a known resistance, and then calculates voltage. To keep the resistance from impacting the circuit performance, the resistance is very large. Therefore, when you insert the meter, you will get a flow of current through the meter.Because of this large resistance, the current trough the resistance load, inductive load, and wires is very small. Thus, the voltage drop across the loads and wiring is very small. Therefore, it appears that the entire voltage in the circuit is across the huge resistance in the meter. The result is a voltage reading that is very near the source voltage.Let's do the math. Let's assume you have 120 volts. You also have a resistance of 500 ohms, and a motor winding that has 0 ohms resistance when DC is applied (This is true for motors). The meter has a 10 million ohm resistance.If these loads are in series, the total resistance is 10Million 500 ohms. The 11.9 microamps. By multiplying the current flow to each resistance, you get 6 millivolts across the resistance, no voltage across the motor winding, and 119.994 across the open switch or meter. Since a meter rounds it reading, you would get 120.If the loads are in parellel, you would get the same thing, becuase the switch is in series with both loads. In this example, the motor winding would have all the current flow through it since it is zero ohms, and the parallel resitance load is 500 ohms. Thus, the total resistance is the 10 million of the meter, and this resistance drive the current, and thus the largest voltage drop is at the swtich/meter. You could decide to remove the motor from this parellel circuit. If you did then the then the result is the series circuit above.
What is infinity ohms?
Infinite ohms is what a multimeter will read across an open switch or a broken connection. It means that no electrons will pass between the points being measured.
Is a switch and example of a resistor?
No it is not. A resistor has a known resistance that is less than infinity. A switch has a resistance of either infinity when it is open or low when it is closed
Is ohms law verified for the open circuits?
For an open circuit, you basically have an infinite resistance, and zero current. This can be considered a special case of Ohm's law.
What is the difference between continuity and resistance check?
Continuity is checking for a completed circuit including a short circuit. Checking resistance would be checking in ohms resistance of a circuit, motor windings or an open circuit.
How does a resistor in a circuit effect similar to open circuit?
Resistors resist amounts of the electricity flowing through the circuit.For example if the resister has these strips of colors on it in this order(red,green,blue) then the resister has 25,000,000 ohms. That means that the lamp(s)/ bulb(s) is(are) going to be very going to be very dim. Because, the more ohms the dimmer the light, the less ohms the brighter the light. But we should get back on task. A resistor effects a circuit because it makes the lamp(s)/ bulb(s) brighter of dimmer depending on the amount of ohms they have.
How do you check the relay brake switch in a 93 Lincoln Town Car?
Im not sure what you mean by RELAY brake light switch. There is 1 brake light switch on the brake pedal. Check it with an OHM meter,wires disconnected brake off should be "open" (no connection) press the pedal and should have no resistance (0 OHMS)
What should the resistance in Ohms be set to for a newly installed throttle position sensor for a 1986 Park Ave 3.8 liter V6?
5,672 Ohms at half-way open...good luck!
What should a bad motor read in ohms if it is bad?
If an Alternating Current (a/c) motor is bad. The resistance will read very hi as in an open winding. ie: meg ohms Or very low as in a shorted winding. ie: 0.01 ohms It must not read any resistance to the housing or shaft. The resistance between leads should be a reasonable value and can be determined with : electromotive force divided by inductance equals resistance. example: 215 volt alternating current with name plate full load amperes of 10 should read very near 21.5 ohms resistance between leads.
