A cylindrical wire of radius `0.5mm` and conductivity `5times10^(7)``S/m` is subjected to an electric field of `10mV`/`m` .The expected value of current in the wire will be `x^(3)pi` 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 of radius 10^(-3)m and length 2m is stretched by a force of 50 N. Calculate the fundamental frequency of the note emitted by it. Density of wire is 1.6. xx 10^(3)" kg m"^(-3) .

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

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 square wire loop of side 30cm & wire cross section having diameter 4mm is placed perpendicular to a magnetic field changing at the rate 0.2 T/s. Final induced current in the wire loop. (Given: Resistivity of wire material is (1.23xx10^(-8) ohm m)

A wire has a length of 2.0m and a resistance of 5.0(Omega) .Find the electric field existing inside the wire if it carries a current of 10A.

A long straight wire of radius 10mm carries a current uniformly distributed over its cross section. The ration of magnetic fields due to the wire at distance of 5mm and 15 mm, respectively from the axis of the wire is

A long straight wire of radius 10mm carries a current uniformly distributed over its cross section. The ration of magnetic fields due to the wire at distance of 5mm and 15 mm, respectively from the axis of the wire is

A 10 m wire kept in east-west direction is falling with velocity 5 m/s perpendicular to the field 0.3xx10^(-4)Wb//m^(2) .The magnitude of the induced emf in the wire is