« previous next »

Author Question: How to get the power rating in Watts from a label? (Read 2013 times)

j_sun

  • Sr. Member
  • ****
  • Posts: 384
on: Jun 25, 2013
Okay so my Science homework is like this Energy Audit thing and I've got the formulas to calculate stuff if I input the power rating in watts for each appliance anyway my computer says 50hz 5Amps 240v (Australian Outlet Voltage by the way) so I can I can calculate the power rating in watts from this


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jun 25, 2013
W = V * A. So W = 5 * 240


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Jones

  • Full Member
  • ***
  • Posts: 145
Reply #2 on: Jun 25, 2013
You can calculate Wattage by multiplying voltage and current (5*240=1200W). You mention that its a project on energy. Just an fyi energy is wattage over a time period. So you would need to multiply that over the time the computer is on. Most cases it's in kWh so watch your units...


TI

  • Sr. Member
  • ****
  • Posts: 434
Reply #3 on: Jun 25, 2013
Equal 1200 watts maximum power can be used from each outlet.


TI

  • Sr. Member
  • ****
  • Posts: 434
Reply #4 on: Jun 25, 2013
The formula for watts (not VA) is W=(240 *5)*Power Factor.

The power factor of a computer is less than 1, so the watts will be less than 1200.

Your computer is rated at 1200 VA (volt-amperes).

TexMav


« previous next »
 

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity
Label the four mutated DNA segments shown below according to the type of point mutation each ... Label the four mutated DNA segments shown below according to the type of point mutation each ...
Violence and Segregation in Watts, Los Angeles, August 11, 1965 Violence and Segregation in Watts, Los Angeles, August 11, 1965
A “reduced power” warning light indicates a fault with the electronic throttle control system on ... A “reduced power” warning light indicates a fault with the electronic throttle control system on ...
Find the derivative using the power rule Q2 Find the derivative using the power rule Q2
Average quarterly presidential approval rating, from Eisenhower to Trump Average quarterly presidential approval rating, from Eisenhower to Trump
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library