The fermi energy of silver is given as 5.49 eV. a) Find thedensities of electron and atom per volume. b) Find the fermivelocity of electron in silver c) The current value flowing throughsilver is 2 A. The cross sectional area of silver is 0.5 cm2. Findthe drift velocity of electron in silver according to givenconditions. d)Find the collision time ï´ for an electron for sliver.(the definition of current density is the current per crosssectional area, the resistivity value of silver is 1.59x10-8ohm.m,