# physics

A 250-ohm resistor is connected in parallel with a 190-ohm resistor. What is their equivalent resistance?

1. 0
2. 0
3. 9
1. 1/Rt=1/250+1/190 Off hand, I am guessing 110 ohms

doing the algebra,
Rt=(250*190)/(250+190)=108ohms

1. 0
2. 0
posted by bobpursley

## Similar Questions

A total resistance of 3 ohms is to be producd by combining an unknown resistor R with a 12 ohm resistor. What is the value of R and how is it connected to the 12 ohm resistor a) 4.0 ohm parallel b) 4.0 ohm in series c) 2.4 ohm in

asked by susane on March 28, 2007
2. ### Physics

Determine the total resistance of each of the following parallel circuits. A. A parallel circuit with a 20-ohm resistor and a 10-ohm resistor. B. A parallel circuit with two 20-ohm resistors and a 10-ohm resistor. C. A parallel

asked by Sydney on April 6, 2018
3. ### Physics

A 30 ohm resistor is connected in parallel with a variable resistance R and the parallel combination is then connected in series with a 5 ohm resistor, and connected across 120 volt source. Find the minimum value of R if the power

asked by Mycah on March 25, 2017
4. ### physics

A 30 ohm resistor is connected in parallel with a variable resistance R. The parallel combination is then connected in series with a 6 ohm resistor and connected across a 120 V source. Find the minimum value of R if the power

asked by Oscar on March 25, 2017
5. ### Physics

A 10 ohm resistor and a 20 ohm resistor are connected in parallel. What is the equivalent resistance of this setup? What formula do I use for this?

asked by Frank on December 11, 2014
6. ### physics

resistors of 30 ohms and 60 ohms are connected in parallel and joined in series to a 10 ohm resistor. the circuit voltage is 180 volts I need to find 1)the voltage of the parallel circuit 2)the resistance of the complete circuit

7. ### physics

resistors of 30 ohms and 60 ohms are connected in parallel and joined in series to a 10 ohm resistor. the circuit voltage is 180 volts I need to find 1)the voltage of the parallel circuit 2)the resistance of the complete circuit

8. ### Physics

A 10 ohm resistor and a 20 ohm resistor are connected in parallel. What is the equivalent resistance of this setup?

asked by Anonymous on December 4, 2012
9. ### physics.

resistors of 30 ohms and 60 ohms are connected in parallel and joined in series to a 10 ohm resistor. the circuit voltage is 180 volts I need to find 1)the voltage of the parallel circuit 2)the resistance of the complete circuit