Q20 of 330 Page 19

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

The formula is given by Ohm which states the relation between potential difference, current and resistance.

Potential difference = Current × Resistance


More from this chapter

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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

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

 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?

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The p.d. across a 3Ω resistor is 6 V. The current flowing in the resistor will be: