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Convert everything to the same unit, for example, to Ohm. Then use the formula for parallel resistances:

1/R = 1/R1 + 1/R2 + 1/R3...

For the case of two resistors, you can also calculate the resulting resistance as product-over-sum:

R = (R1 * R1) / (R1 + R2)

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Q: When a 1.2 kilo ohm resistor and a 100 ohm resistor are connected in a parallel circuit the total resistance is?
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Continue Learning about Engineering

When the resistor removed from a parallel connection of the circuit whether the resistance increase or decrease?

if we remove a resistor from the parallel connection the effective resistance value will be increased.


How do resistance behave in parallel circuit?

in a parallel circuit resistance decreases increasing the current.


What is a resistance network?

A resistance 'network' consists of a number of resistors connected together in series, or in parallel, or in series-parallel, or as a complex circuit. A 'complex' circuit is one that is not series, parallel, or series-parallel.


Will putting another resistorin parallel raise or lower the total resistors in circuit?

Placing another resistor in parallel to an existing resistor will lower the total resistance in the circuit. RParallel = 1 / Summationi=1toN (1 / Ri)


What is the current in a 12-volt circuit with two 6-ohm resistor connected in parallel?

Two 6-ohm resistors in parallel have a net effective resistance of 3 ohms.With 3 ohms connected across a 12-volt supply, the current is 12/3 = 4 amperes.

Related questions

Why resistor should disconnected from the circuit when measured the value of resistor?

if not disconnected you will measure the resistance of the circuit in parallel with the resistor.


Is resistance box connected in series or parallel?

It depends on what you want to accomplish. If you want to decrease the resistance in a circuit, you would place the box in parallel to some other resistor. If you want to increase the resistance in a circuit, you would place the box in series.


What is the equivalent resistance of the parallel circuit you have connected?

In principle, it is infinite. I have not connected a parallel circuit in ages.


If additional resistance is connected in parallel with a circuit the supply voltage will decrease?

If additional resistance is connected in parallel with a circuit the supply voltage will decrease?


What happens to supply voltage if additional resistance is connected in parallel circuit?

No change in supply voltage as additional resistance is connected in parallel circuit.


When the resistor removed from a parallel connection of the circuit whether the resistance increase or decrease?

if we remove a resistor from the parallel connection the effective resistance value will be increased.


Does a Resistor have a different resistance when connected to a power source vs if the resistance is tested when the resistor is out of circuit?

In the circuit it is connected to other devices with their own properties that can influence your reading. Out of circuit you just measure the resistor. It has the same value both ways.


You are just asking that let us assume you have connected 2 or 3 resistors in a circuit and the current flowing through the circuit and from all the resistors will be same but how?

If the resistors are connected in series, the total resistance will be the sum of the resistances of each resistor, and the current flow will be the same thru all of them. if the resistors are connected in parallel, then the current thru each resistor would depend on the resistance of that resistor, the total resistance would be the inverse of the sum of the inverses of the resistance of each resistor. Total current would depend on the voltage and the total resistance


How do resistance behave in parallel circuit?

in a parallel circuit resistance decreases increasing the current.


Is total resistance less than smallest resistor in a series parallel circuit?

no


Why one of the leads of resistor connected in electronic circuit is opened while measuring its resistance?

You open one of the leads of resistor connected in electronic circuit while measuring its resistance in order to not introduce error cause by other components in the circuit.


How is an multimeter connected to take a measure?

Multimetres are generaly used to measure the following quantities. Voltage: multimeter is connected in parallel with the Load; Current: multimeter is connected in series with Load; Resistance: the resistor must be taken out of the circuit first, then, the probes from the multimeter are connected across the resistor,