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Solution


Q.

Read the passage given below and answer the following questions from (i) to (v).

Ohm’s law is the relationship between potential difference and current in a circuit which was first established by George Simon Ohm. The law states that the current passing through a metallic conductor is directly proportional to the potential difference applied between its ends. V proportional to I space i. e. comma space V equals k I  Where k is the resistance offered by the conductor and is constant for a given conductor. Although a large class of materials is known to follow Ohm’s law, there do exist materials used in circuits that do not follow the direct relationship between V & I.

 

(v) Four students have plotted the graph between V-I for a conductor. Which one is correct
1  
2  
3  
4  

Ans.

(3)