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 × 10-3 kg. density is 8.92 ×103 kg/m 3 and resistivity is 1.7 × 10-8 Ω–m. The length of wire is :
(1) l = 6.8 m
(2) l = 10 m
(3) l = 5 m
(4) l = 100 m
