Moodle-II CSE-2023

If an electric and a magnetic field is applied along the X and Y-axis, respectively, then along which axis will the Hall field be developed?

• Y-axis

• X-axis

• Z-axis

Lorentz force is given by the following where v is velocity, V is the potential difference, and B is magnetic induction

• eV

• qV

• Bev 

  In Hall Effect which force balances the force due the Hall field?

• gravitational force

•   Lorentz force 

• electrostatic force

  If the temperature increases, then the Fermi level in a P-type semiconductor

• Remains the same

• decreases

•   Increases

   If the temperature increases, then the Fermi level in an N-type semiconductor

• decreases

• Remains the same

• Increases

To make an N-type semiconductor, we add the following to Si

• B

• P

• both a) and b)

To make a P-type semiconductor, we add the following to Si

• P

• In

• both a) and b)

   In an N-type semiconductor the Fermi level lies between

• the acceptor level and the valence band

• The donor level and the conduction band

• none of the above

  In a P-type semiconductor the Fermi level lies between

• none of the above

• The acceptor level and the valence band

• The donor level and the conduction band

The principle of Hall Effect is

• none of the above

•   Fleming’s left-hand rule

• right hand rule