Question 3 Page 218 - Chapter 12 Class 10 - Electricity

Last updated at Dec. 16, 2024 by

An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.

Slide44.JPG Slide45.JPG

You saved atleast 2 minutes of distracting ads by going ad-free. Thank you :)

You saved atleast 2 minutes by viewing the ad-free version of this page. Thank you for being a part of Teachoo Black.

Transcript

Question 3 Page 218 An electric iron of resistance 20 takes a current of 5 A. Calculate the heat developed in 30 s. Resistance = R = 20 Ω Current = I = 5A Time taken = t = 30 s We know that, Heat generated is given by H = I2 R t H = (5)2 × 20 × 30 H = 25 × 20 × 30 H = 25 × 600 H = 15000 H = 15 × 103 H = 1.5 × 10 × 103 H = 1.5 × 104 J Heat generated is 1.5 × 104 J

Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo