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 as 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
This is a Long Answer Type Questions as classified in NCERT Exemplar
Explanation- a) In V- graph of condition (i), a reverse characteristics is shown in fig. (c). Here A is connected to n - side of p-n junction and B is connected to p -side of p-n junction I with a resistance in series.
(b) In V- graph of condition (ii), a forward characteristics is shown in fig. (d), where 0.7 V is
the knee voltage of p-n junction I 1/slope= (1/1000)? It means A is connected to n -side of p n- junction and B is connected to p-side of p n- junction and resistance R is in series of p n- junction between A and B.
(c) In V- graph of condition (iii), a
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This is a Long Answer Type Questions as classified in NCERT Exemplar
Explanation- a) In V- graph of condition (i), a reverse characteristics is shown in fig. (c). Here A is connected to n - side of p-n junction and B is connected to p -side of p-n junction I with a resistance in series.
(b) In V- graph of condition (ii), a forward characteristics is shown in fig. (d), where 0.7 V is
the knee voltage of p-n junction I 1/slope= (1/1000)? It means A is connected to n -side of p n- junction and B is connected to p-side of p n- junction and resistance R is in series of p n- junction between A and B.
(c) In V- graph of condition (iii), a forward characteristics is shown in figure (e), where 0.7 V is the knee voltage. In this case p -side of p-n junction II is connected to C and n -side of p-n junction II to B.
(d) In V-I graphs of conditions (iv), (v), (vi) also concludes the above connection of p-n junctions I and II along with a resistance R. Thus, the arrangement of p-n I, p-n II and resistance R between A B, in the figure p-n I, p-n II and C will be as shown.
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<p>This is a Long Answer Type Questions as classified in NCERT Exemplar</p><p><strong>Explanation- a) </strong>In V- graph of condition (i), a reverse characteristics is shown in fig. (c). Here A is connected to n - side of p-n junction and B is connected to p -side of p-n junction I with a resistance in series.</p><p><strong> (b)</strong> In V- graph of condition (ii), a forward characteristics is shown in fig. (d), where 0.7 V is</p><p>the knee voltage of p-n junction I 1/slope= (1/1000)? It means A is connected to n -side of p n- junction and B is connected to p-side of p n- junction and resistance R is in series of p n- junction between A and B.</p><p><strong> (c) </strong>In V- graph of condition (iii), a forward characteristics is shown in figure (e), where 0.7 V is the knee voltage. In this case p -side of p-n junction II is connected to C and n -side of p-n junction II to B.</p><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1743152311phpPEPlfj_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1743152311phpPEPlfj.jpeg" alt="" width="196" height="142"></picture></div></div><p> (d) In V-I graphs of conditions (iv), (v), (vi) also concludes the above connection of p-n junctions I and II along with a resistance R.<br>Thus, the arrangement of p-n I, p-n II and resistance R between A B, in the figure p-n I, p-n II and C will be as shown.</p>
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