# Physics

posted by .

1)Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit?

A)80.0
B)40.4
C)40.0
D)42.5

I got C

2)A 2.00 resistor, and a 12.0 resistor are connected in parallel across a 20.0-V battery. What is the current flowing through the 2.00 resistor?

A)1.67 A
B)1.40 A
C)11.6 A
D)10.0 A

C=vsource/R
I got D

• Physics -

1 is wrong.
2 is wrong. I don't know what you used for R.

• Physics -

1)resistance in parallel = 40 resistance in series = 40
total equaivalent resistance = 80 which is A

2)C = vsource/R
C = 20.0/2.00
= D. How could it be anything else

• Physics -

1) Since when do parallel resistors add the resistances?

2) The two ohm reistor is in parallel with the twelve ohm resistance. Total resistance then of the parallel branch will be LESS than two ohm.

You need to review what happens to resistance when resistors are connected in parallel.

## Similar Questions

1. ### Physics

Thanks for any help :) Four 20 ohm resistors are connected in parallel and the combination is connected to a 20V emf device. The current is: A) 0.25A B) 1.0 A C) 4.0 A D) 5.0 A E) 100 E Parallel circuits: I know that the voltage is …
2. ### physics

Four 20 ohm resistors are connected in series and the combination is connected to a 20V emf device. The potential difference across any one of the resistors is: A) 1 V B) 4 V C) 5 V D) 20V E) 80 V So there are four resistors that are …

Four 20 ohm resistors are connected in parallel and the combination is connected to a 20 V emf device. The current in any one of the resistors is: A) 0.25 A B) 1.0 A C) 4.0 A D) 5.0 A E) 100 A I get B V=IR I= 20V/20 ohms = 1 A for …
4. ### Physics repost

Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit?
5. ### Electrical

(2) 1500 Ù resistors are connected in series. They are then connected in parallel to a single (1) 5 kÙ resistor. a) Draw the circuit before and after reduction: b) What is the equivalent resistance of the circuit?
6. ### Physics

A)Two identical resistors are connected in parallel across a 30-V battery, which supplies them with a total power of 7.0 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance …
7. ### Physics

A)Two identical resistors are connected in parallel across a 30-V battery, which supplies them with a total power of 7.0 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance …
8. ### Physics- HELP PLEASE:)

4.) Three 20-Ù resistors are connected in series to a 9-V battery. What is the voltage difference across each resistor?
9. ### physics

Four resistors are connected to a battery with a terminal voltage of 18.0 V. The resistors are, R1=61, R2=34, R3=90, and R4=11. R1 & R2 are in series, and combined are in parallel with R3, & the combination of R1, R2, & R3 are in series …
10. ### Physics

Let n represent the number of similar resistors in a circuit. Each resistor has a resistance of r. When the resistors are connected in parallel the circuit has a total resistance of R. What would the total resistance of the circuit …

More Similar Questions