A battery of emf 8 V and internal resistance $0.5 \Omega$ is being charged by a 120 V DC supply using a series resister of $15.5 \Omega$. The terminal voltage of 8 V batter) during charging is

Resistance of a wire is $8 \Omega$. It is drawn in such a way that it experiences a longitudinal strain of $400 \%$. The final resistance of the wire is

In the circuit shown in the figure, neglecting the source resistance, the voltmeter and ammeter readings respectively are

The potential difference across the ends of conductor is $\beta 0 \pm 03) \mathrm{V}$ and the current through the conductor is $(5 \pm 0.10)$ A. The error in the determination of the resistance of the conductor is