Question

7. Current electricity: ohm's law-
In an experiment of verification of Ohm's law, following observations are obtained
Potential 0.5
1.0
1.5
2.0
2.5
difference
V (in volt)
Current I 0.2
0.4
0.6
0.8
1.0
(in amp)
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​

Answer 1

Answer:

(a) 1.25 V

(b) 0.3 A

(c) The graph is linear, so resistance can be found from any value of the given table.

For instance: When V = 2.5 volts

Current, I = 1.0 ampere

According to Ohm's law, R=VI=2.51=2.5Ω

Explanation:

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