This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A resistor of unknown resistance and a 15- resistor are connected across a 20-V emf in such a way ... (Read 322 times)

rlane42

  • Hero Member
  • *****
  • Posts: 594
on: Jul 28, 2018
A resistor of unknown resistance and a 15- resistor are connected across a 20-V emf in such a way that a 2.0 A current is observed in the emf. What is the value of the unknown resistance?
 a. 75
  b. 12
  c. 7.5
  d. 30
  e. 5.0

Question 2

When a 20-V emf is placed across two resistors in series, a current of 2.0 A is present in each of the resistors. When the same emf is placed across the same two resistors in parallel, the current through the emf is 10 A. What is the magnitude of the greater of the two resistances?
 a. 7.2
  b. 7.6
  c. 6.9
  d. 8.0
  e. 2.8


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

carlsona147

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

a


rlane42

  • Member
  • Posts: 594
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

alvinum

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Cardiac pacemaker. The pacemaker device is implanted beneath the skin near the heart, and the electr Cardiac pacemaker. The pacemaker device is implanted beneath the skin near the heart, and the electr
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670 New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
A downward-sloping spark line usually indicates high secondary ignition system resistance or an ... A downward-sloping spark line usually indicates high secondary ignition system resistance or an ...
A meter lead connected to a T-pin that was gently pushed along the signal wire of the TP sensor ... A meter lead connected to a T-pin that was gently pushed along the signal wire of the TP sensor ...
Combustion analysis of 0.150 g of an unknown compound containing carbon, hydrogen, and oxygen ... Combustion analysis of 0.150 g of an unknown compound containing carbon, hydrogen, and oxygen ...
Mass spectrometry for identifying an unknown protein isolated from a 2D gel Mass spectrometry for identifying an unknown protein isolated from a 2D gel
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library