A copper wire of length 
and radius 
is nickel plated till its final radius become 
but length remains 
. If the resistivity of nickel and copper be 
and 
respectively, the conductance of the nickelled wire is
a)
b)
c)
d)
A copper wire of length and radius is nickel plated till its final radius become but length remains . If the resistivity of nickel and copper be and respectively, the conductance of the nickelled wire is
a)
b)
c)
d)
Question ID - 150322 | SaraNextGen Top Answer
A copper wire of length and radius is nickel plated till its final radius become but length remains . If the resistivity of nickel and copper be and respectively, the conductance of the nickelled wire is
a)
b)
c)
d)
|
A copper wire of length |
|||||||
|
a) |
|
b) |
|
c) |
|
d) |
|
1 Answer
127 votes
Answer Key / Explanation : (c) -
|
(c) Resistance of copper part of wire Resistance of nickel portion of wire As these two resistances are in parallel, hence conductance of the nickelled wire
|
and
127 votes
Answer Link
127