Kirchhoff's junction rule is a reflection of

In the given circuit, the current through $2 \mathrm{\Omega }$ resistor is

The effective resistance between $P$ and $Q$ for the following network is

Five identical resistors each of resistance $R=1500 \Omega$ are connected to a $300 \mathrm{V}$ battery as shown in the circuit. The reading of the ideal ammeter $A$ is

The variation of terminal potential difference $\left(V\right)$ with current flowing through as cell is as shown

The $\mathrm{emf}$ and internal resistance of the cell are

Consider an electrical conductor connected across a potential difference $V.$ Let $\Delta q$ be a small charge moving through it in time $\Delta t$. If $I$ is the electric current through it,
(i) the kinetic energy of the charge increases by $IV\Delta t$
(ii) the electric potential energy of the charge decreases by $IV\Delta \mathrm{t}$.
(iii) the thermal energy of the conductor increases by $IV\Delta \mathrm{t}$.

Then the correct statements is/are