Question

Draw a labeled diagram to study the relation between the current flowing through a wire
and the potential difference applied across it. Briefly describe how will you perform this
experiment. With the help of a graph show the variation of voltage with current. What
conclusion can be drawn from this experiment ?

Answer 1

The formula states that the current passing through a conductor is directly proportional to the potential difference across its ends, provided the physical conditions like temperature, density, etc. remain unchanged.

This is Ohm's law.

i directly proportional v or i=v/r

r=resistance

As V = 1.05 V

I = 0.15 A

V = IR

1.05 = 0.15 × R

R = 1.05 / 0.15 = 7Ω