Last Updated On 16-03-2023 - By Jeesha Sara
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 :-
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)
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A copper wire of length |
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a) |
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b) |
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c) |
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d) |
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(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
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and
Next Question :
Following figure shows cross-sections through three long conductors of the same length and material, with square cross-section of edge lengths as shown. Conductor 
will fit snugly within conductor 
and conductor 
will fit snugly within conductor 
Relationship between their end to end resistance is
.png)
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a) |
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b) |
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c) |
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d) |
Information is not sufficient |
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