In the circuit shown below,$E_1 = 4.0 \,V, R_1 = 2 \,\Omega, E_2 = 6.0 \,V, R_2 = 4 \,\Omega$ and $R_3 = 2 \,\Omega$. The current $I_1$ is ..................... $A$.

If a current of $7 \ A$ flows through the electric circuit,what is the potential difference between $B$ and $C$ in volts?

Refer to the circuit diagram given below. The heat generated across the $6\text{ }\Omega$ resistance in $100\text{ s}$ is $\frac{\alpha}{100}\text{ J}$. The value of $\alpha$ is . . . . . . . (Nearest integer)

The given figure shows a network of resistances and a battery. Choose the correct statement$(s)$.

Kirchhoff's first law,$i.e.$,$\Sigma i = 0$ at a junction,is based on the law of conservation of:

In a portion of some large electrical network,currents in certain branches are known as shown in the figure. The value of $V_A - V_C$ is ............... $V$.