For a hole which of the following statements is incorrect ?

Electrical Engineering Materials 22/09/2021

A. Holes can exist in certain semiconductors only
B. Holes can exist in any material including conductors
C. Holes may constitute an electric current
D. Holes can be considered as a net positive charge

Related Mcqs:

    High resistivity materials are used in_____________?
    A. precision instruments B. heating elements C. motor starters D. incandescent lamps E. all of the above...
    At transition temperature the value of critical field is____________?
    A. zero B. negative real value C. positive real value D. complex value...
    The resistivity of a metal is a function of temperature because_____________?
    A. the amplitude of vibration of the atoms varies with temperature B. the electron density varies with temperature C. the electron gas density varies with temperature...
    Platinum is used in_____________?
    A. electrical contacts B. thermocouple C. heating element in high temperature furnace D. grids of special purpose vacuum tubes E. all of the above...
    The carbon percentage is least in__________________?
    A. low carbon steel B. wrought iron C. cast iron D. malleable iron...

Leave a Reply

Your email address will not be published. Required fields are marked *