The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below –

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

100 J of heat are produced each second in a 4 Omega resistance. Find the potential difference across the resistor.

In the given circuit , the two cells have no internal resistance. Calculate the potential difference across the 20 Omega resistor .

When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.

When a potential difference 30V is applied across a resistors, it draws a current of 3A. If 20V is applied across the same resistor, what will be the current ?

A current of 2A flows in a system as shown in the figure. The potential difference between A and B (V_(A)-V_(B)) will be

Resistance of a given wire is obtained by mea- suring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each then error in the value of resistance of the wire is :