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

Author Question: A voltage DV is applied across the ends of a Nichrome heater wire having a cross-sectional area A ... (Read 42 times)

abarnes

  • Hero Member
  • *****
  • Posts: 556
on: Jul 28, 2018
A voltage DV is applied across the ends of a Nichrome heater wire having a cross-sectional area A and length L. The same voltage is applied across the ends of a second Nichrome heater wire having a cross-sectional area A and length 2L. Which wire gets hotter?
  1.The shorter wire does.
  2.The longer wire does.
  3.More information is needed.

Question 2

Suppose an electrical wire is replaced with one having every linear dimension doubled (i.e., the length and radius have twice their original values). The wire now has
  1.more resistance than before.
  2.less resistance.
  3.The same resistance.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lkoler

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 28, 2018
Answer to Question 1

1

Answer to Question 2

2


abarnes

  • Member
  • Posts: 556
Reply 2 on: Jul 28, 2018
Wow, this really help

tanna.moeller

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Lions mating in Ngorongoro Conservation Area, Tanzania Lions mating in Ngorongoro Conservation Area, Tanzania
The Pantanal, Brazil, seen here in flood condition, is a critical jaguar range area. The Pantanal, Brazil, seen here in flood condition, is a critical jaguar range area.
Voltmeter hook-ups for voltage-drop testing of a Ford-type cranking circuit. Voltmeter hook-ups for voltage-drop testing of a Ford-type cranking circuit.
The European Alps have lost ~30% to 40% of surface area and ~50% of volume since the 1850s. The European Alps have lost ~30% to 40% of surface area and ~50% of volume since the 1850s.
7-month-old Leslie —an example of cross-modal transfer 7-month-old Leslie —an example of cross-modal transfer
The forces of diffusion and electrostatic pressure. (a) In diffusion, solutes move from an area of h The forces of diffusion and electrostatic pressure. (a) In diffusion, solutes move from an area of h
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library