The circuit in the figure consisting of three identical lamps and two coils, is connected to a dc source. The ohmic resistance of the coils is negligible. After some time switch S is opened. Select correct alternative(s) just afterward. 

As shown in the figure, a magnet is brought towards a fixed coil. Due to this the induced emf, current, and the charge are $E$, $I$ and $Q$ respectively. If the speed of the magnet is double then the following statement is wrong:-

One conducting U tube can slide inside another as shown in figure, maintaining electrical contacts between the tubes. The magnetic field $B$ is perpendicular to the plane of the figure. If each tube moves towards the other at a constant speed $v$, then the induced emf in the circuit, where $l$ is the width of each tube:-