In an experiment of verification of Ohm’s law, following observations are obtained.
Draw a characteristic V-I graph and use this graph to find:
(a) potential difference V when the current I is 0.5 A.
(b) current I when the potential difference V is 0.75 V.
(c) resistance in circuit
In an experiment of verification of Ohm’s law, following observations are obtained.
Draw a characteristic V-I graph and use this graph to find:
(a) potential difference V when the current I is 0.5 A.
(b) current I when the potential difference V is 0.75 V.
(c) resistance in circuit

(a) When the current is 0.5 A, the potential difference is 1.25 V.

(b) When the potential difference is 0.75 V, current is 0.3 A.

(c) Because the graph is linear, resistance may be calculated from any value in the table.

Given  V = 2.5 Volt

So

I = 1.0 amp

Ohm’s law states:

R = V / I

R = 2.5 / 1.0

Therefore,

R = 2.5 Ohm