« 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 101 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?

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?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Digestion and absorption of carbohydrates in the small intestine. Digestion and absorption of carbohydrates in the small intestine.
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 intestine. Small intestine.
A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ... A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ...
Celiac disease affects the small intestine. Celiac disease affects the small intestine.
Testing the strength of the trapezius muscle against resistance Testing the strength of the trapezius muscle against resistance
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library