Go To Your Study Dashboard

Get Answers to all your Questions

header-bg

A wire of length $L_o$ has a resistance $R_o$ . It is gradually stretched till its length becomes $2 L_o$ .

(a) Plot a graph showing variation of its resistance R with its length l during stretching.

(b) What will be its resistance when its length becomes $2 L_o$ ?

Answers (1)

a)

b)

$R_0=\rho \frac{L_0}{A_0}$

When the wire is stretched the volume remains the same

$\\A_0L_0=A_22L_0\\A_2=A_0/2$

$R_2=\rho \frac{2L_o}{A_0/2}=4R_0$

Posted by

Safeer PP

View full answer

Crack CUET with india's "Best Teachers"

HD Video Lectures
Unlimited Mock Tests
Faculty Support

cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE asks schools to ensure error-free LOC forms for Classes 10, 12; edit window from October 13

anam-khan

‘You ruined my career’: Students hit back at CBSE over 'abrupt' removal of additional subjects

anam-khan

‘Careers are at stake’: CBSE removes additional subject option for private students without prior notice

Latest Question