A wire of 50 cm long, `1mm^(2)` in cross-section carries a current of 4 A, when connected to a 2 V battery, the resistivity of wire is

A nichorme wire 50cm long 1mm^2 cross- section carries a current of 4 A. When connected to 2V battery The resistivity of nichrome wire in Omega-m is

A nichrome wire 50 cm long and one square millimetre cross- section carries a current of 4 A when connected to a 2 V battery. The resistivity of nichrome wire in ohm metre is

A wire of non-uniform cross-section is carrying a steady current. Along the wire

A wire of non-uniform cross-section is carrying a steady current. Along the wire

A copper wire of length 50cm and area of cross-section 10^(-6)m^(2) caries a current of 1A .If the resistivity of copper is 1.8times10^(-8)Omegam .The electrical field across the wire is