pls help NUMERICAL
Asked by rohitkumarh94 | 26th Sep, 2009, 03:50: PM
Expert Answer:
L - Length, A - Area, V - Volume, ρ - Resistivity, R - Resistance.
Suffix i and j refer to initial and final values.
Final length = 4 times the original.
Lf = 4 Li
Final volume = Thrice intial volume.
Vf = 3Vi
Volume = Area x Length
AfLf = 3AiLi
Af = 3Ai/4
Rf = ρLf/Af = ρ4Li/(3Ai/4) = 16ρLi/3Ai = 16Ri/3
The resistance will be 16/3 times intial resistance.
Regards,
Team,
TopperLearning.
Answered by | 26th Sep, 2009, 11:54: 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