« previous next »

Author Question: A small bulb is rated at 7.5 W when operated at 125 V. Its resistance (in ohms) is a. 0.45. b. ... (Read 98 times)

vicotolentino

  • Hero Member
  • *****
  • Posts: 552
on: Jul 28, 2018
A small bulb is rated at 7.5 W when operated at 125 V. Its resistance (in ohms) is
 a. 0.45.
  b. 7.5.
  c. 17.
  d. 940.
  e. 2 100.

Question 2

How much energy is dissipated as heat during a two-minute time interval by a 1.5-kW resistor which has a constant 20-V potential difference across its leads?
 a. 58 J
  b. 46 J
  c. 32 J
  d. 72 J
  e. 16 J


b614102004

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 28, 2018
Answer to Question 1

E

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

A small herd of Przewalski's Horses A small herd of Przewalski's Horses
The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort
Small Feline Small Feline
The small intestine. The small intestine.
A potentiometer uses a movable contact to vary resistance and send an analog voltage to the PCM. A potentiometer uses a movable contact to vary resistance and send an analog voltage to the PCM.
Basic sliding effleurage using the thumb gets into the small spaces between the metatarsals of the ... Basic sliding effleurage using the thumb gets into the small spaces between the metatarsals of the ...
Video: Embryonic development - Week 4

For a complete list of videos, visit our video library