Water in an electric kettle connected to a 220V supply takes 6.5 min to reach its boiling point.How
Asked by | 20th Sep, 2009, 01:08: PM
Let 'r' be the resistance of the electric kettle, v1= 22o v , t1 = 6.5 min , v2= 200 v , t2 = ?
As the heat produced in both the cases will be same ,
Use the relation,
heat produced = v12 t1 / r = v22 t2 / r
and plug in the values , to get the time t2, required if the supply had been 200V .
Answered by | 20th Sep, 2009, 01:09: PM
Related Videos
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change