Download App

Work and Energy — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWork and Energy3 Marks
Question
What is the meaning of the symbol kWh? What quantity does it  represent?
✓

Answer

The unit kWh stands for kilowatt-hour. One kilowatt-hour is the amount of electrical energy consumed when an electrical appliance having power of 1 kilowatt is used for 1 hour. It represents the amount of electrical energy consumed in 1 hour.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 3 Mark )" from Work and Energy→Work and Energy — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

The average atomic mass of a sample of an element X is 16.2u. What are the percentages of isotopes ${^{16}_{8}\text{X}}$ and ${^{18}_{8}\text{X}}$ in the sample?
→

Match the following columns with correct answer.

 
Organism/ Bacteria
Disease
a.
Leishmania
Worm
b.
Staphylococci
Kala-azar
c.
Trypanosoma
Acne
d.
Ascaris lumbricoides
Sleeping sickness
→

Briefly describe cardiac muscle fibres.

→
How many centres have been established in India for artificial insemination of cows and buffaloes?
→

Write short note on Pulse Polio Programme.

→
Give reasons for:
It is difficult to pull out the husk of a coconut tree.
→

Give two examples each of:

  1. Narrow leaved rabi season weed.
  2. Broad leaved kharif season weed.
→

Write short notes on:

Tuberculosis.

→

Write down four general characters of phylum Echinodermata. Give two examples.

→
Why does our palm feel cold when we put some acetone (or perfume) on it?
→