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There is no fixed resistance for a "closed circuit." I get the feeling you are asking about a security system and are not giving us all the details. == Certainly it's only zero in theoretical circuits. In real life, it's a "low" or "minimal" resistance.
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∙ 16y ago
Wiki User
∙ 14y agoThe equivalent resistance of two resistors, R1 and R2, in parallel can be calculated as follows... The current through each resistor, I1 and I2, is E/R1 and E/R2. By Kirchoff's current law, the net current in the two resistors is I1 + I2, which is the same as E/R1 + E/R2, which is the same as E R2/R1 R2 + E R1/R1 R2, which is the same as E (R1 + R2)/R1 R2. Now, take Ohm's law and calculate the net resistance given the voltage and net current. This is. E
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E (R1 + R2)/R1 R2 Simplifying, by cancelling the E's and inverting, you get R1 R2/(R1 + R2).
Wiki User
∙ 11y agoWith an ohmmeter if the circuit is not complex or powered up or if the circuit is alive, by measuring the voltage and current and then applying OHM'S Law.
Resistance (in Ohms) equals Volts (in Volts) / Current (Amps)
Wiki User
∙ 11y agoAs low as can be manufactured. A switch is supposed to be as high a resistance as possible
when it's open. When it's closed, it should have no effect on the circuit ... it should electrically
resemble a piece of wire.
Wiki User
∙ 13y agoThe resistance of an open circuit is (theoretically) infinite.
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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.
What is infinite resistance in a circuit?
It isn't. If you're using superposition, you open circuit current sources and short voltage sources; this is because the current source declares the current that will be flowing through that branch. Both current and voltage sources have a finite internal resistance.
When one resistance or load in a series circuit gets defective the circuit becomes?
The circuit will become an open circuit.
How will you convert a open current circuit to a open voltage circuit?
The first thing you need to know is the internal resistance of the current source, the voltage source will have the same internal resistance. Then compute the open circuit voltage of the current source, this will be the voltage of the voltage source. You are now done.
When resistance and continuity test are made on electronic circuit components the circuit being tested should be?
Open
What would happen to circuit if there was no resistance?
a circuit with no resistance or zero resistance can be considered as open circuit in which the current is zero. without resistance the circuit just becomes open ()
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.
An open circuit has an infinate resistance?
There is no such a thing as infinite resistance but it could be a very high resistance.
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 infinite resistance in a circuit?
It isn't. If you're using superposition, you open circuit current sources and short voltage sources; this is because the current source declares the current that will be flowing through that branch. Both current and voltage sources have a finite internal resistance.
When one resistance or load in a series circuit gets defective the circuit becomes?
The circuit will become an open circuit.
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 occurs during an open circuit?
The resistance goes to infinity.
How will you convert a open current circuit to a open voltage circuit?
The first thing you need to know is the internal resistance of the current source, the voltage source will have the same internal resistance. Then compute the open circuit voltage of the current source, this will be the voltage of the voltage source. You are now done.
When resistance and continuity test are made on electronic circuit components the circuit being tested should be?
Open
How do you fix obd11 code 446?
Replace the vent valve. Repair open, short, or resistance problem in the control circuit. Repair an open, or short, or resistance problem in the power circuit, or replace the PCM.
Why short circuit and open circuit are equivalent appropriate?
In circuit equivalence, voltage and current sources are respectively equated to short and open ckt because of the very nature of them. A voltage source has zero internal resistance and current source has infinite internal resistance hence their equivalents:-)
