Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

How does resistance of wire changes when : 1)It's length tripled? 2)It's diameter is tripled ? 3) It's material is changed to one whose resistivity is three times ? 2)
Asked by neerja pathak | 12 May, 2012, 12:30: PM
answered-by-expert Expert Answer
The resistance of a wire is directly proportional to its length and inversely proportional to its area (or square of inverse of diameter).
Therefore
1) When the length is tripled then its resistance will also becomes three times.
2) If the diameter get tripled then its resistance becomes one ninth of the initial reistance.
3) If the material is changed to one whose resistivity is three times then again its resistance will be three times.
Answered by | 12 May, 2012, 11:49: PM
CBSE 10 - Physics
Asked by khajannirwan | 27 Feb, 2024, 10:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by sakshikatewa0 | 08 Feb, 2024, 12:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by saanviyadla | 24 Jan, 2024, 07:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by kamalaranjanmohantymohanty5 | 06 Jan, 2024, 10:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by nandhikasugumar | 05 Oct, 2023, 04:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by daniya062008 | 02 Oct, 2023, 08:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×