Advertisements
Advertisements
प्रश्न
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
Advertisements
उत्तर
Power,
(P) = 1000 W
= 1 kW
Time duration,
(t) = 1 hr
Now, we can calculate the electrical energy consumed as,
Energy consumed = (Power) (Time)
So,
Energy consumed
= (1)(1) kWh
= 1 kWh
So, energy consumed is 1kWh.
APPEARS IN
संबंधित प्रश्न
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
Is energy a vector quantity?
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
What kind of energy is possessed by the following?
A stretched rubber band _____________
What type of energy is possessed : by the piece of stone which is thrown away on releasing the stretched rubber strings of catapult?
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value of the stone?
Name the energy transfers which occur when :
someone speaks into a microphone
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
