# algebra 2

posted by .

two resistors are connected in parallel. their resistances are 8 ohms and 17ohms. what is the resistance of the combonation.

• algebra 2 -

1/R = 1/R1 + 1/R2 = (R1+R2)/R1R2
so R = R1 R2 / (R1+R2)

= 8*17 /(8+17)

## Similar Questions

1. ### Pre-Calc

Hello, I am not sure how to go about solving this equation: The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let …
2. ### physics

A 15.0 Ohms resistor is connected in series to a 120V generator and two 10.0 Ohms resistors that are connected in parallel to each other. -What is the total resistance of the load?
3. ### physics

Resistors R1, R2, and R3 have resistances of 15.0 Ohms, 9.0 Ohms and 8.0 Ohms respectively. R1 and R2 are connected in series, and their combination is in parallel with R3 to form a load across a 6.0-V battery. -What is the total resistance …
4. ### PreCalc

The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let x be the resistance of the second resistor. Express the total …
5. ### Algebra 2

two resistors are connected in parallel. Their resistances are 6 ohms and 10 ohms. What is the resistance, (R), of the combination?
6. ### Algebra 2

two resistors are connected in parallel. Their resistances are 8 ohms and 17 ohms. What is the resistance (R) of the combination?
7. ### Algebra

Two lamps can be connected to a battery in a circuit in series or in parallel. You can calculate the total resistance RT (t is down from r) in a circuit if you know the resistance in each lamp. Resistance is measured in ohms. For a …
8. ### Physics

Two identical resistors are connected in parallel across a 26-V battery, which supplies them with a total power of 9.8 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance …
9. ### Calculus 1

If two resistors with resistances R1 and R2 are connected in parallel, as in the figure below, then the total resistance R, measured in ohms (Ω), is given by 1/R= 1/R1+ 1/R2. If R1 and R2 are increasing at rates of 0.3 Ω/s …
10. ### physics

Two resistors of resistances 3 ohms and 6 ohms are connected in a parallel across a 9 V battery. What is the equivalent resistance and the total current in the circuit?

More Similar Questions