Name the following:
i. The ratio of the work done to the quantity of charge transferred.
ii. An alloy of Ni, Cr, Mn and Fe.
iii. The SI unit of resistance.
iv. A metal used to make the filament of an electric bulb.
v. An alloy used to prepare a coil of high resistance for use in electric appliances such as an electric heater.
vi. Constituents of the alloy used to make a fuse wire.
vii. The unit same as the watt·second.
viii. A unit for intensity of magnetic field.
ix. The scientist in whose honour the SI unit of power is named.
x. A device that converts electric energy into mechanical energy.
xi. A device that converts mechanical energy into electric energy.