Explain why plastic beads are used in a Xerox toner?
Plastic beads in Xerox toner serve a crucial role in electrostatic printing, a process fundamental to photocopiers. These beads are ________ _____ _____ ________ _______.
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For an intrinsic semiconductor with energy gap Eg = 0.85 eV, determine the position of the Fermi level at 300 K if 6me . Also calculate the density of electrons and holes at 300 K.
Explain why plastic beads are used in a Xerox toner?
Calculate the atomic packing fraction for a bcc lattice.
Explain, with the help of a diagram, the depletion region in a p-n junction.
The density of copper is 8.92 103 kg m-3 and its atomic weight is 63.5. Assuming that each copper atom provides one conduction (free) electron, calculate the density of conduction electrons. Also estimate the relaxation time for free electrons applying classical free electron theory. What is the corresponding mean free path? Take the electrical conductivity of copper to be 6.8
107
m-1 .
Explain with the help of diagrams the magnetism in a superconductor when it is cooled in the presence of a magnetic field.
Formaldehyde (CH20) is a planar trigonal molecule with C at the centre. List its symmetries.