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Your original question was in two parts:
1.) How many ohms in an open circuit? Infinite ohms (the meter will show no measurement).
2.) How many ohms in a short circuit? 0 ohms. There would be no measurable ohms as there would be no resistance in the altered circuit.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThere are no Ohm's in a shorted circuit. An Ohm is a measure of the circuits resistance to current. A shorted circuit is a circuit - by definition - wherein the flow of current is unopposed - and thus very high.
Consider the simplest of all circuits: A battery, an LED, and a resistor. The LED is lighted by the current flow from the battery. The resistor resists a certain amount of current flow so that the current from the battery does not exceed the amount of current the LED needs to light and not be burnt out - (or more technically, open).
If you were to take the resistor out of this simple circuit, you would essentially have a short circuit. In practice, short circuits are usually caused by a failure of a component to resist the flow of current.
Think of it this way:
A "Short Circuit" is a complete failure to oppose the flow of current. There IS NO resistance and therefore no Ohm's. (Ohm's is the measurement for resistance).
An "Open Circuit", (the opposite of a short circuit) is a circuit where a component is defective and completely obstructs the flow of current due to there being a physical break, or open, in the circuit. Imagine a simple light switch in a house. When you flip the switch and the light turns on, the circuit is closed, current can flow, and the bulb lights. When you flip the switch and turn off the light, the switch physically OPENS the circuit. When you open the circuit, you break the path of the circuit and current cannot flow.
The short answer to your question is thus:
There is no measurement of resistance in a shorted circuit - as measured in Ohm's - because there is no resistance to current flow to measure.
Wiki User
∙ 14y agoIt depends on the multimeter error. An ideal meter would read '0' for a perfect short.
Wiki User
∙ 14y agoA short circuit has no resistance. that's what is meant by the term "short circuit". This causes massive current flow since I = V / R. In a short, R is approaches zero.
Wiki User
∙ 14y agoIt's a term for grounding a hot wire causing a "short".
Wiki User
∙ 12y agoA short circuit can be identified using the ohmmeter when its reading is zero.
Wiki User
∙ 14y agoShort circuits generally don't have any resistance.
Mihai Dinca
A short circuit has a resistance equal to zero. Of course, some people think that the number zero does not exist and therefore state that a short circuit has no resistance.
Wiki User
∙ 13y agoUsually, very close to zero.
Wiki User
∙ 6y agozero ohms
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What are the approximations of open circuit and short circuit tests?
Firstly turn of the power before this test...Using a resistance or continuity tester you should get the following results:Short circuit: Very low resistance (nearly 0 ohms) or the bell will ring.Open circuit: Very high resistance (Somewhere in the range of Mega ohms) or the bell will not ring.The reason for this is because and open circuit has a gap in it (which has high resistance).The short circuit has wires that are crossed and so has a really low resistance.
The total resistance for this circuit if all resistors are 200 ohms is?
400 ohms
Resistance in a circuit and in ohms law is represented by the letter?
The letter R is used to represent resistance. For instance, the R in a circuit is said to be 52 ohms. Just that simple.
Four resistors having a value of 100 ohms are connected in parallel what is the total resistance of the circuit?
What would the measured ohms be for two 100 ohm resistors wired in series? Two 100 ohm resistors wired in series measure 200 ohms.
What is the function of 240 ohms resistor?
To provide 240 ohms of resistance. What those 240 ohms do in an actual circuit depends on the intention of the designer.
What is the value of the resistance of an short circuit?
ohms
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.
What is the name given to a circuit that has a load or resistance total of 0.0 ohms?
In that case, the circuit is shorted, or short-circuited.
Why are resistances parallel to short circuits neglected in a circuit?
You can consider a short circuit to be a resistor with R=0 Ohms. It is then clear by the equation for calculation of parallel resistance that the combined resistance of a resistor in parallel to a short circuit is 0. Consider the following example with R1= 1k Ohms and R2= 0 Ohms: Rtotal = R1*R2 / (R1+R2) = R1*0 / R1 = 0 Ohms.
What are the approximations of open circuit and short circuit tests?
Firstly turn of the power before this test...Using a resistance or continuity tester you should get the following results:Short circuit: Very low resistance (nearly 0 ohms) or the bell will ring.Open circuit: Very high resistance (Somewhere in the range of Mega ohms) or the bell will not ring.The reason for this is because and open circuit has a gap in it (which has high resistance).The short circuit has wires that are crossed and so has a really low resistance.
Why does a short circuit drain a battery?
You have to remember ohms law Voltage = amp * resistance. Using some basic algebra you can rewrite the equation as amps = voltage / resistance. Since a short circuit has relatively 0 ohms of resistance, this increases both the amps and resistance which uses more battery capacity,power, and creates more heat.
What is the total resistance of a series circuit with 5ohms10 ohms 20 ohms?
35 ohms
The number of ohms in a circuit is a measure of the?
The electrical resistance of the circuit
Is resistance in a series circuit equal to the largest resistor in the series?
No. The resistance in a series circuit is all the resistor values added together. eg. If two resistors were in a circuit, one was 10 ohms and the other was 30 ohms, the resistance in the circuit would be 30 ohms. Hope this helps!
The total resistance for this circuit if all resistors are 200 ohms is?
400 ohms
There are three sources of resistance in a parallel circuit. two of them are rated at 20 ohms the other at 10 ohms. what is the circuits total resistance?
5 ohms
How do you test resistance in a circuit?
With a meter that measures Ohms.
