Electromagnetic Induction

he formula to calculate the force on a current-carrying conductor in a magnetic field is:

Where,
B = magnetic field
current
length
angle

Substitute the values:

The correct answer is option (A):

Electromagnetic induction is the process of generating electric current using a changing magnetic field.
It is the fundamental principle behind:
- Electric motors (convert electrical energy to mechanical energy using electromagnetic induction)
- Electric generators (generate electricity using electromagnetic induction)
- Induction stoves (use rapidly changing magnetic fields to induce currents in metal vessels)

However, an electric geyser works by converting electrical energy into heat energy using a resistive heating element, and does not involve electromagnetic induction.

The correct option is (C): Electric geyser

Electromagnetic induction is the process by which a change in magnetic field within a coil induces an electric current. This phenomenon is described by Faraday’s law of induction, which states that the induced voltage in a coil is proportional to the rate of change of the magnetic flux through the coil.

Thus, the correct answer is ”producing induced current in a coil.”