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.