- 2019:
The induced emf across the ends of the rod is given by:
e = Blv
where B is the magnetic field, l is the length of the rod, and v is the velocity of the rod.
- 2018:
The magnetic field at a point lying on the bisector of the angle between the arms of the bent wire at a distance d from the point of bending is given by:
B = \frac{\mu_0 I}{4\pi d} \left[ \frac{1}{\sin \frac{\theta}{2}} + \frac{1}{\sin \frac{3\theta}{2}} \right]
where $\mu_0$ is the permeability of free space, I is the current in the wire, and $\theta$ is the angle between the arms of the bent wire.
- 2017:
The magnetic flux linked with the loop will be doubled.
The magnetic flux through a loop is given by:
\Phi = BA
where B is the magnetic field, and A is
