Physics, asked by shrinath10, 1 year ago


28. Define energy. Name the physical quantity that has same unit as that of energy. Four
electrical appliances, each rated 500 W, run for 10 hours. Calculate the energy in kWh and
joules.​

Answers

Answered by tanishaagarwal99999
1

Answer:

We usually say that,the amount of work which we can do is energy.There are many forma of energy in class 9 potential and kinetic energy i.e mechanical energy is studied.

Work done has tge same unit as energy.

Power=500W=0.5kW

we know that,

Power=work done/time

work done= power*time

= 0.5*4*10

=20J

hope it helps......

Answered by Siddhant7038
2

Answer:

The energy may be defined as the capacity of a body to do work.

energy's unit is joules

Work's unit is also joules

Power=energy/time

energy=Power*time

500*60*10

0.5*10 (because energy has to be calculated in kwh)

so

ENERGY= 5 Kwh

please mark brainliest

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