B M Sharma Solutions for Chapter: Electric Current and Circuits, Exercise 5: DPP

The magnitude and direction of the current in the circuit shown will be

The internal resistances of two cells shown are $0.1 \mathrm{\Omega }$ and $0.3 \mathrm{\Omega }$. If $R=0.2 \mathrm{\Omega }$, the potential difference across the cell

Two cells of equal $\mathrm{EMF}$ and of internal resistances $r_1$ and $r_2 \left(r_1>r_2\right)$ are connected in series. On connecting this combination to an external resistance $R$, it is observed that the potential difference across the first cell becomes zero. The value of $R$ will be

In the circuit shown here, $E_1=E_2=E_3=2 \mathrm{V}$ and $R_1=R_2=4 \text{Ω}$. The current flowing between points $A$ and $B$ through battery $E_2$ is

Consider the circuit shown in the figure. The current $I_3$ is equal to

As the switch $S$ is closed in the circuit shown in figure, current through it is

The current in the arm $CD$ of the circuit will be

Kirchhoff's junction rule is a reflection of