SELECT * FROM question_mgmt as q WHERE id=4209 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=191 and ex_no='5' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Work and Energy a certain household has consumed 250 units of ener

Question:

A certain household has consumed 250 units of energy during a month. How much energy is this in joules?

Answer:

1 unit of energy = 1 kilowatt hour (kWh)

1 kWh = 3.6 × 106 J

Therefore, 250 units of energy = 250 × 3.6 × 106 = 9 × 108 J


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