show graphically the variation of---1. Resistance versus potential difference at constant temperature.2. Electric current versus potential difference at constant temperature.3. Resistance versus length of a conductor.4. Resistance versus cross section of a conductor
show graphically the variation of---
1. Resistance versus potential difference at constant temperature.
2. Electric current versus potential difference at constant temperature.
3. Resistance versus length of a conductor.
4. Resistance versus cross section of a conductor