**How to find a unknown resistor value in paralell- All**

We assume it's non-zero, so I, I, I, I, and then we have that the total resistance of the circuit is equal to R1 plus R2 plus R3. So when you have resistors in series like this, the total resistance, their combined resistance, is just equal to their sum. And that was just a very long-winded way of explaining something very simple, and I'll do an example. Let's say that this voltage is-- I don... 3/11/2008 · Best Answer: Ohms Law For DC direct current R = Voltage divided by Current Rmember Current is constant in series circuits but not in parallell circuits. Therefore you use Kirchoffs law ( current going in = current leaving) Voltage is Constant in a parallell circuit. Resistance in a series circuit …

**BBC Bitesize National 5 Physics - Practical electrical**

3/11/2008 · Best Answer: "Ah herro" is right about the formulas. If this is for a school course that is what you need. If this is in "real life" and the circuit is ONLY resistance (for example an old SERIES Christmas tree light string), then from a practical standpoint you put an ohmmeter across the two leads and it will show total... An ammeter is always connected in series with circuit element whose current is to be measured. If you do not connect the ammeter the correct way, you can severely damage the device. Ohm 3 Figure 3a Voltmeter Connection Figure 3b Ammeter Connection An ohmmeter is a device that measures resistance. It is connected in parallel across the resistance to measured. You should NOT measure …

**BBC Bitesize National 5 Physics - Practical electrical**

3/11/2008 · Best Answer: Ohms Law For DC direct current R = Voltage divided by Current Rmember Current is constant in series circuits but not in parallell circuits. Therefore you use Kirchoffs law ( current going in = current leaving) Voltage is Constant in a parallell circuit. Resistance in a series circuit is R1+R2 how to change phone service and keep same number 23/08/2005 · But if we want to find the total resistance in a paralell circuit with 3 or more resistors we use this formula: The resistors value is: R1= 10 ? , R2= 15 ? , R3= 20 ? . We choose the voltage to have the same value as the resistor with the highest value in the paralell circuit…

**How do you find unknown value of a resistor when total**

3/11/2008 · Best Answer: Ohms Law For DC direct current R = Voltage divided by Current Rmember Current is constant in series circuits but not in parallell circuits. Therefore you use Kirchoffs law ( current going in = current leaving) Voltage is Constant in a parallell circuit. Resistance in a series circuit … how to find turning point from equation Since the resistance per unit length of the slide wire is constant, the length of the two ends of the slide wire, L 4 and L 3 , may be substituted for R 4 and R 3 , respectively. If, also, an unknown resistor, X n , is inserted in place of R 1 , and a standard resistor, R S ,

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### How to find a unknown resistor value in paralell- All

- How Do I find unknown resistance in a series circuit
- How to find a unknown resistor value in paralell- All
- PHYSICS 1040L LAB WHEATSTONE BRIDGE Series and Paralled
- How Do I find unknown resistance in a series circuit

## How To Find An Unknown Resistance In A Series Circuit

A: If you know the total resistance and total voltage then you know total current flow for the circuit, this current will be same for every resistor in series however the voltage drop will change for each resistor .

- 3/11/2008 · Best Answer: Ohms Law For DC direct current R = Voltage divided by Current Rmember Current is constant in series circuits but not in parallell circuits. Therefore you use Kirchoffs law ( current going in = current leaving) Voltage is Constant in a parallell circuit. Resistance in a series circuit …
- A: If you know the total resistance and total voltage then you know total current flow for the circuit, this current will be same for every resistor in series however the voltage drop will change for each resistor .
- Circuits. When resistances are connected in series, the sum of the resistances in the circuit will equal the equivalent resistance(the resistance that would be there if …
- So we can see that a Wheatstone bridge circuit can be used to compare an unknown resistance R X with others of a known value, for example, R 1 and R 2, have fixed values, and R 3 could be variable.