2 exactly similar heating resistances are to be used to connect across a main supply to heat some water. Is more heat obtained per minute if they are connected in series or in parallel? Give reasons for your answer.
Asked by | 17th Jul, 2011, 04:40: PM
Resultant resistance in a series combination is greater than any individual resistance, and resultant resistance in a parallel combination is smaller than any individual resistance.
since HR; so more the resistance, more the heat. Therefore, the resistances must be connected in series to obtain more heat per minute.
Answered by | 18th Jul, 2011, 12:52: AM
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number