Home
Class 10
PHYSICS
Which uses more energy, a 250 W TV set f...

Which uses more energy, a 250 W TV set for 1 hour or a 1,200 W toaster for10 minutes?

Text Solution

Verified by Experts

Energy = Power `xx` Time
For TV set :
`E_(1)=250W xx 1 xx 3600` sec
`=900000 J=9xx10^(5)J`
For toaster :
`E_(2)=PT = 1200W xx 10xx60sec`
`=720000 =7.2 xx 10^(5)J`
`rArr E_(1) gt E_(2)`
`:.` TV set uses more energy.
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    NAND LAL PUBLICATION|Exercise ADDITIONAL QUESTIONS |5 Videos

  • ELECTRICITY

    NAND LAL PUBLICATION|Exercise ACTIVITY 12.6|3 Videos

  • LIGHT : REFLECTION AND REFRACTION

    NAND LAL PUBLICATION|Exercise ADDITIONAL QUESTIONS |7 Videos

Similar Questions

Explore conceptually related problems

Calculate the electric energy consumed by a 1200 W toaster in 20 minutes.

Which has more resistance, 100 W bulb or 200 W bulb? WHich draw more current?

Which has more resistance, 100 W bulb or 200 W bulb? WHich draw more current?

Calculate the electricity bill amount for the month of November of a family if 4 tube lights of 40 W each for seven hours, a TV of 150 W for three hours and two bulbs of 60 W each for four hours are used per day. The cost per unit is RS 3.50.

A household uses the following electric appliance: Two electric fans of rating 80 W each for 12 hours each day , find energy consumed.

An electric heater of 1000W is used for 2 hours a day. What is the cost of using it for a month of 28 days, if 1 unit costs is 3.00 ?

An electric bulb of 60 W is used for 6 hours per day. Calculate the units of energy consumed in one day by the bulb.