A cylindrical wire of radius 0.5 mm and conductivity `5 xx 10^7` S/m is subjected to an electric field of 10 mV/m. The expected value of current in the wire will be `x^3pi` mA. The value of x is ____ .

An electric current of 16 A exists in a metal wire of cross section 10^(-6)"M"^(2) and length 1m. Assuming one free electron per atom. The drift speed of the free electron in the wire will be (0.00x)m//s. Find value of x. ("Density of metal"= 5xx10^(3)"kg"//"m"^(3), "atomic weight"=60)

A wire is moving with velocity 12xx10^(-2) m/s in a magnetic field of 0.5 T. if the induced emf is 9 mV, the length of wire is

A uniform cylindrical wire is subjected to a longitudinal tensile stress of 5 xx 10^(7) N//m^(2) . Young's modulus of the material of the wire is 2 xx 10^(11) N//m^(2) . The volume change in the wire is 0.02% . The factional change in the radius is

A long cylindrical wire carrying current of 10 A has radius of 5 mm find its its magnetic field induction at a point 2 mm from the centre of the wire

A 0.5 m long conducting wire is bent in form of a circle, Calculate the magnetic field at the centre if wire carries a current of 5 A.

A wire of length 2.5 km and resistance 35 Omega has fallen from a height of 10m in earth's horizontal field of 2 xx 10^(-5) T . The current through the wire is

A steel wire of length 1m, and radius 0.1mm is elongated by 1mm due to a weight of 3.14kg. If g = 10 m//s^(2) , the Young's modulus of the steel wire will be

An electric current of 16 A exists in a metal wire of cross section 10^(-6) m^(2) and length 1 m. Assuming one free electron per atom. The drift speed of the free electrons in the wire will be (Density of metal = 5 xx 10^(3) kg//m^(3) atomic weight = 60)

A wire having Young's modulus 1.2xx10^(11) N//m^(2) is subjected to the stress of 2.4xx10^(7) N//m^(2) . If the length of the wire is 10m, the extension produced in it is