The direction of induced current as seen from the $Z-axis$ will be. An infinitely long cylinder is kept parallel to an uniform magnetic field $B$ direction along positive $Z-axis$.

One conducting $U$ -tube can slide inside another as shown in the figure, Fig $9.67\left(\mathrm{a}\right)$, 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 emf induced in the circuit in terms of $B, l$ and $v$, where $l$ is the width of each tube will be

A small magnet $M$ is allowed to fall through a fixed horizontal conducting ring $R$. Let $g$ be the acceleration due to gravity. The acceleration of $M$ will be

A small magnet $M$ is allowed to fall through a fixed horizontal conducting ring $R$, Fig. $9.68$. Let $8$ be the acceleration due to gravity. The acceleration of $M$ will be

The variation of induced emf $\left(\epsilon \right)$ with time $\left(t\right)$, in a coil if a short magnet is moved along its axis with a constant velocity, is best represented as shown.