Question

The table shows current amperes and potential difference in volts:
1) find the average resistance .
2) what will be the nature of the graph between the current and potential difference? (do not draw graph).
3) which law will the graph prove?

Answer 1

Answer:

1) 1.0356 ohms

2) linear graph

3) ohm's law

Explanation:

1.we know that

V=IR

R=V/I.......eqn(1)

Substitute above table values in equation one

4/9 = 0.4444444.....

5/11.25= 0.444444.....

6/13.5=0.44444.....

average resistance = sum of resistance / no of resistance

0.4444+0.4444+0.44444/3

=1.0345