$\mathrm{R}\mathrm{ }=\mathrm{ }10\mathrm{\Omega }$ and $\mathrm{E}\mathrm{ }=\mathrm{ }13\mathrm{ }\mathrm{V}$ and voltmeter and ammeter are ideal, then -

The potential difference $\left(V_{\mathrm{A}}-V_{\mathrm{B}}\right)$ between the points $A$ and $B$ in the given figure is

The figure below shows a circuit and its input voltage $V_i$ as a function of time $t$.

Assuming the diodes to be ideal, which of the following graphs depicts the output voltage $V_o$ as function of time $t ?$

A current of $0.1 \mathrm{A}$ flows through a $25 \mathrm{\Omega }$ resistor represented by the circuit diagram. The current in the $80 \mathrm{\Omega }$ resistor is:

In the circuit, wire $1$ is of negligible resistance. Then

For a diode connected in parallel with a resistor, which is the most likely current $\left(I\right)$-voltage $\left(V\right)$ characteristic graph?

Two batteries of emfs $\mathrm{4\; V}$ and $\mathrm{8\; V}$ with internal resistances $\mathrm{1 }\mathrm{\Omega }$ and $\mathrm{2 }\mathrm{\Omega }$ are connected in a circuit with a resistance of $\mathrm{9 }\mathrm{\Omega }$ as shown in figure. The current and potential difference between the points $\mathit{P}$ and $\mathit{Q}$ are,