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in Semiconductor Electronics: Materials, Devices and Simple Circuits by (26.1k points)
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Electric current is the ow of charges along a definite direction and take place through metals as well as semiconductors.

1. Mention the charge carriers in the above cases.

2. Give the sketch of graph with V along X-axis and I along Y-axis for a metal at room temperature.

3. Give the physical significance of the slope of the graph.

4. If the above graph is drawn at 100°C, compared the nature of the graph with the graph at room temperature.

1 Answer

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1. Metals – electrons

Semiconductor – Electrons and holes 

2. Straight line graph 

3. Slope gives conductance

4. When the temperature increases, resistance is also increased and hence slope decreases.

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