Question

V)
An electron beam enters a magnetic field at night angles to it
as shown in figure below. The direction of force acting upon
the electron beam will be
electron
magnetic
field
а)
b
Left to the direction of electrons
Right to the direction of electrons
Towards the direction of electrons
d)
Opposite to the direction of electrons​

Answer 1

Resistivity can be defined as the resistance of a conducting material per unit length with unit area of cross section. So it SI unit will be. ρ= RA.