The current flows from positive terminal to negative terminal inside a cell.

Observe the correlation in the first pair and complete the second pair:
$1 \mathrm{volt}=\frac{1 \mathrm{Joule}}{1 \mathrm{Coulomb}}$:: $1 \mathrm{ohm}=$________

List the factors on which the resistance of a uniform cylindrical conductor of a given material depends.

In figure $R_1=10 \mathrm{\Omega }, R_{\mathit{2}}=40\mathit{ }\mathrm{\Omega }, R_3=30\mathit{ }\mathrm{\Omega }, R_4=20 \mathrm{\Omega }, {\mathrm{R}}_5=60 \mathrm{\Omega }$ and a $12 \mathrm{V}$ battery is connected to the arrangement. Calculate:

(a) Total resistance in the circuit.

(b) Total current flowing in the circuit.

Draw a circuit diagram for verifying Ohm's law. Connect a resistor, an ammeter, a plug key, a battery and a voltmeter across the resistor. Show the direction of the flow of current.

What is the resistance of a conductor through which a current of $0.5 \mathrm{A}$ flows when a potential difference of $2 \mathrm{V}$ is applied across its ends?

State Ohm's law. Represent it mathematically.

Following figures shows graph of $I-V$. Which graph is correct according to Ohm's law?

A $V-I$ graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtain such a graph.

You are provided with a resistor, a key, an ammeter, a voltmeter, four cells of $1.5 \mathrm{V}$ each and few connecting wires. Using circuit components, draw a labelled circuit diagram to show the setup to study the Ohm's law. State the relationship between potential difference $\left(V\right)$ across the resistor and the current $\left(I\right)$ flowing through it. Also draw $V-I$ graph taking $V$ on the $X-\mathrm{axis}$.

The values of current ($I$) flowing through a given resistor of resistance ($R$), for the corresponding values of potential difference ($V$) across the resistor, are as given below:

Plot a graph between current ($I$) and potential difference ($V$) and determine the resistance ($R$) of the resistor.