Ask a Doubt
Request a call back

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

CBSE Class 10 Answered

How will the resistance of a wire change if the area of cross section of wire is increased to 3 times?
Asked by ms0851000 | 11 Mar, 2019, 07:03: PM
answered-by-expert Expert Answer
Resistance of any conductor is given by
 R space equals space rho cross times l over A w h e r e space rho space i s space t h e space r e s i s t i v i t y space o f space t h e space c o n d u c t o r l space i s space t h e space l e n g t h space o f space t h e space c o n d u c t o r a n d space A space i s space t h e space c r o s s space s e c t i o n space a r e a space o f space c o n d u c t o r
 In the given relation we can see that Resistance of a resistor is inversely proportional to cross area.
If we increase the area by 3 times then the resistance will become one third of the initial value.
Answered by Ankit K | 11 Mar, 2019, 08:31: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Physics
find Req
question image
Asked by sakshikatewa0 | 08 Feb, 2024, 12:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
resistivity
Asked by kamalaranjanmohantymohanty5 | 06 Jan, 2024, 10:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
find the new resistance of wire length l area of cross section A if it is folded 4 times
Asked by nandhikasugumar | 05 Oct, 2023, 04:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
finding the net resistance  
question image
Asked by daniya062008 | 02 Oct, 2023, 08:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
the resistance of a wire of 0.01 cm radius is 10 ohm.if the resistivity of the material of the wire is 50*10^-8 ohm meter find the length of the wire
Asked by prassanna.j | 03 Sep, 2023, 12:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Nichrome wire of length L and radius R has resistance 10 ohm.How would the resistance of the wire change when: only diameter of the wire is doubled?Justify 
Asked by prassanna.j | 03 Sep, 2023, 12:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
A given length of a wire is doubled of itself and this process is repeated once again.By what factor does the resistance of the wire changes?
Asked by prassanna.j | 03 Sep, 2023, 12:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
 A 6 ohm resistance is doubled by folding,what is the new resistance?
Asked by prassanna.j | 28 Aug, 2023, 09:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Equivalent resistance 
question image
Asked by praveenkumae975 | 06 Feb, 2023, 07:19: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
active attachment
Asked by ruparus | 04 Nov, 2022, 09:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×