A uniform metallic wire carries a current 2 A. when 3.4 V battery is connected across it. The mass of uniform metallic wire is 8.92 x 10 -3 kg. density is 8.92 x 10 kg/m 3 and resistivity is 1.7 x 10 -8 
-m. The length of wire is:
A
=6.8m
B
=10m
C
= 5m
D
=100m
Text Solution
Verified by ExpertsThe correct answer is:
B
I = 2A
V = 3.4 V
Using Ohm's Law
M = (density volume)
Volume = 
L = 10m
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