Plot a graph showing variation of current versus voltage for the material GaAs

Graph showing the variation of current versus voltage for a material GaAs is shown in figure. Identify the region of (i) negative resistance (ii) where Ohm's law is obeyed.

Is the graph showing variation of current versus voltage for a diode linear or non-linear?

(a) Draw graph showing the variation of current versus voltage in an electroyte when an external resistance is also connceted. (b) (i) The graph between resistance (R ) and temperature (T) for Hg is shown in the figure (a). Explain the behaviour of Hg near 4k. (ii) In which region of the graph shown in the figure (b) is the resistance negative and why?

Plot a graph showing the variation of current density (J) versus the electric field ( E ) For two conductors of different materials. What information from this plot regarding the properties of the conducting material, can be obtained which can be used to select suitable materials for use in making (i ) standard resistance and (ii) connecting wires in electric circuit?

A cell of emf epsilon and internal resistance r is connected across a variable resistor R. Plot a graph showing variation of terminal voltage V of the cell versus the current I. Using the plot, show how the emf of the cell and its internal resistance can be determined.

.A cell of emf E and internal resistance r is connected across a variable resistor. Plot a graph showing variation of terminal voltage V of cell versus the current.