For the LCR circuit, shown here, the current is observed to lead the applied voltage. An additional capacitor $C^{\prime }$ , when joined with the capacitor C present in the circuit, makes the power factor of the circuit unity. The capacitor $C^{\prime }$ , must have been connected in:

In the given LCR circuit, the readings of voltmeter and ammeter will, respectively, be?

Figure shows a square loop of side $0.5 \mathrm{m}$ and resistance $10\mathrm{\Omega }$. The magnetic field on left side of line PQ has a magnitude $B=1.0 \mathrm{T}$. The work done in pulling the loop out of the field uniformly in $2.0 \mathrm{s}$ is