Q197 / 200 · Manipal (MET) 2014 · Physics
A cylindrical conducting rod is kept with its axis along positive $z$-axis, where a uniform magnetic field exists parallel to $z$-axis. The current induced in the cylinder is
- Correct answerAzero
- Bclockwise as seen from $+z$-axis
- Canti-clockwise as seen from $+z$-axis
- Dopposite to the direction of magnetic field
Solution
Since, $B$ is constant,
$\begin{aligned}
\therefore & & \frac{d \phi}{d t} & =0 \\
\therefore & & i & =0
\end{aligned}$
Hence, the correct answer is option: 'A'.