An experiment was perfomed to investigate the effect of the type of conductor on the current strength. A200 mm length of nichrome wire with diameter 0,3 mm is wound into a coil an attached to a...

An experiment was perfomed to investigate the effect of the type of conductor on the current strength. A200 mm length of nichrome wire with diameter 0,3 mm is wound into a coil an attached to a circuit. The potential defference is measured across the coil. The experiment is repeated for a 200 mm length of copper wire of diameter 0,3 mm. Temperature was kept constant. The following results were obtained.

Current through each wire (A)	0,2	0,4	0,6	0,8	1,0
Potential difference across the nichrome wire (V)	0,8	1,6	2,4	3,2	4,0
Potential difference across the copper wire (V)	0,4	0,8	1,2	1,6	2,0

Questions are attached below Thank you in advance..

Extracted text: 3.6.1 Name the independent variable in this investigation 3.6.2 Name the dependent variable in this investigation 3.6.3 Which variable was kept constant. 3.6.4 Draw graphs (on the same set of axes) on the graph paper provided to illustrate the relationship between the potential difference across each wire and the current through the wire. 3.6.5 Use the graph to determine the resistance of each wire. 3.6.6 Which wire is the best conductor of electricity? Explain your answer.