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 15 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
Excellent

at

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Rosalind Franklin and X-ray diffraction applied to DNA wet fibres Rosalind Franklin and X-ray diffraction applied to DNA wet fibres
Mirror Neurons in Broca’s Area Mirror Neurons in Broca’s Area
In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward, In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward,
How to find the area of composite figures (Part 1) How to find the area of composite figures (Part 1)
James Watson and Francis Crick’s metal-and wire model of DNA James Watson and Francis Crick’s metal-and wire model of DNA
Cross-section through a Femur Cross-section through a Femur
Video: Pericarditis

For a complete list of videos, visit our video library