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

Author Question: A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature ... (Read 100 times)

B

  • Hero Member
  • *****
  • Posts: 570
on: Aug 6, 2020

Question 1

A small bulb is rated at 7.5 W when operated at 125 V. Its resistance (in ohms) is

◦
0.45.

◦
7.5.

◦
17.

◦
940.

◦
2 100.


Question 2

A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity α = 4.50 × 10−3 / °C. When the filament is hot and glowing, its temperature is seven times room temperature (20 °C). What is the resistance of the filament (in ohms) at room temperature?

◦
234

◦
1 350

◦
2 080

◦
4 530

◦
5 630
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by B on Aug 6, 2020

shaikhs

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Aug 6, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


B

  • Member
  • Posts: 570
Reply 2 on: Aug 6, 2020
YES! Correct, THANKS for helping me on my review

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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.

Taking a Patient’s Axillary Temperature Taking a Patient’s Axillary Temperature
Poison bulb Poison bulb
Measuring Axillary Temperature Measuring Axillary Temperature
Thermodynamic Diagrams and Vertical Temperature Profiles Thermodynamic Diagrams and Vertical Temperature Profiles
Air-Temperature Data Air-Temperature Data
Temperature gradient generates a global pattern of circulation Temperature gradient generates a global pattern of circulation
Video: Gastroesophageal Reflux Disease (GERD)

For a complete list of videos, visit our video library