NCERT Question 9 - Chapter 11 Class 9 - Work and Energy

Last updated at August 4, 2026 by

NCERT Q9 - A certain household has consumed 250 units of energy - NCERT Questions

Remove Ads

Transcript

NCERT Question 9 A certain household has consumed 250 units of energy during a month. How much energy is this in joules? Energy in households is measured in Kilo Watt Hour 1 unit = 1 kWh Now, 1 kWh = 3.6 × 106 J 250 kWh = 250 × 3.6 × 106 = 250 × 36/10 × 106 = 900 × 106 = 9 × 108 J ∴ 250 units = 250 kWh = 9 × 108 J

Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. He teaches Science, Economics, Accounting and English at Teachoo using clear explanations and exam-focused methods students can trust.

For faster and distraction-free study, students can choose Teachoo Black.