The graph shown in the figure represents a plot of current versus voltage for a given semi-conductor. Identify the region, if any, over which the semicondutor has a negative resistance.

The variation of current and voltage in a conductor has been shown in figure. The resistance of the conductor is

From the given between current I and voltage V shown in figure , indentify the portion corresponding to negative resistance

(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?

The figure shows a plot of terminal voltage 'V' verus the current 'I' of a given cell. Calculate from the graph (a) emf of the cell and (b) internal resistance of the cell.

Shown below is a graph of current versus applied voltage for a diode . Approximately , what is the resistance of the diode for an applied voltage of – 1 V ?

Current l versus time t graph through a conductor is shown in the figure. Average current through the conductor in the interval 0 to 15 s is

An infinitely long straight wire carrying current I , one side opened rectangular loop and a conductor C with a sliding connector are located in the same plane , as shown in the figure. The connector has length l and resistance R . It slides of the right with a velocity v. The resistance of the conductor and the self inductance of the loop are negligible . The induced current in the loop , as function of separation r between the conductor and the straight wire is :

The current-voltage graph of a device is shown in figure. The resistance is negative in region.

Consider a box with three terminals on top of it as shown in figure. Three components namely, two germanium diodes and one resistor are connected across these three terminals in some arrangement A student performs an experiment in which any two of these three terminals are connected in the circuit shown in figure. The student obtains graphs of current-voltage characteristics for unknown combination of components between the two terminals connected in the circuit. The graphs are (i) When A is positive and B is negative (ii) When A is negative and B is positive (iii) When B is negative and C is positve (iv) When B is positive and C is neagtive (v) When A is positive and C is negative (vi) When A is negative and C is positive From these graphs of current - voltage characteristic shown in fig. (c) to (h) determine the arrangement of components between A, B and C.

To verify Ohm's law, a student connects the voltmeter across the battery as shown in the figure. The measure voltage is plotted as a function of the current, and the following graph is obtained if V_(O) is almost zero. identify the correct statement