Q20 of 330 Page 19

Name the law which illustrated by the above V-I graph.

From these values we conclude that ration V/I is a constant i.e., V α I. It means that Ohm’s law is being followed.


More from this chapter

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20

What is the ratio of potential difference and current known as?

 20

The values of potential difference V applied across a resistor and the corresponding values of current I flowing in the resistor are given below :





















Potential difference, V (in volts):



2.5



5.0



10.0



15.0



20.0



25.0



Current, I (in amperes)



0.1



0.2



0.4



0.6



0.8



1.0



Plot a graph between V and I, and calculate the resistance of the resistor.

 20

Write down the formula which states the relation between potential difference, current and resistance.

 20

The potential difference between the terminals of an electric in 240 V and the current is 5.0 A. What is the resistance of the electric iron?