Question

Following graph was plotted between V and I values across a wire. Which of

the following statements is/are correct regarding this?

1. Value of ratio V/I when the potential difference is 0.8V is not equal to the

value of ratio V/I when the potential difference is 1.2 V.

2. This graph illustrates the non-ohmic law.

3. While plotting this graph, the temperature remains constant.

4. All of the these​

Answer 1

Answer:

thank for free points

Answer 2

Graph is added for the question.

Answer - While plotting this graph, the temperature remains constant is the correct answer.

• Ohm's law states that "the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain constant."
• Ohm's law is mathematically expressed as V = I*R, where v is voltage, I is current and R is resistance.
• Since the graph is linear thus the ratio remains constant. Hence, the graph illustrates ohmic law.
• Since ohm's law follows constant temperature condition, thus option c is correct.