Question

Four wires made of same
material have different
lengths and radii, the wire
having more resistance in the
following case
​

Answer 1

Answer:

Explanation:

R∝  

r  

2

 

l

​  

 

a)    

r  

2

 

l

​  

=  

100

1

​  

 

100

​  

=10000

b)    

r  

2

 

l

​  

=  

4

5000

​  

=1250

c)    

r  

2

 

l

​  

=  

400

1

​  

 

100

​  

=40000

d)    

r  

2

 

l

​  

=  

400

1

​  

 

50

​  

=20000

⇒moreresistance