A potential difference of 
is applied at the ends of a copper wire of length 
and diameter 
. On doubling only 
, the drift velocity,
a)
Becomes two times
b)
Becomes half
c)
Does not change
d)
Becomes one-fourth
A potential difference of is applied at the ends of a copper wire of length and diameter . On doubling only , the drift velocity,
a)
Becomes two times
b)
Becomes half
c)
Does not change
d)
Becomes one-fourth
Question ID - 150275 | SaraNextGen Answer
A potential difference of is applied at the ends of a copper wire of length and diameter . On doubling only , the drift velocity,
a)
Becomes two times
b)
Becomes half
c)
Does not change
d)
Becomes one-fourth
|
A potential difference of |
|||||||
|
a) |
Becomes two times |
b) |
Becomes half |
c) |
Does not change |
d) |
Becomes one-fourth |
1 Answer - 5876 Votes
3537
Answer Key : (c) -
Answer Link|
(c)
As |
is independent of area of cross-section hence drift velocity will not change, when diameter is doubled