Question

A person who works with large magnets sometimes places her head inside a strong

field. She reports feeling dizzy as she quickly turns her head. How might this be

associated with induction?

Answer 1

From the Faraday’s law of induction the induced emf is given by the formula:

$emf=-N \frac{Δɸ} {Δt}$

Here,

N

is the number of turn in the coil,

Δɸ

is change in magnetic flux and

Δt

is the time duration.

The fluid in body is mostly electrolytic. The fluid in inner ear lobe which provides us a sense of balance is also electrolytic.

When a person moves quickly inside a strong magnetic field it induces a current in the electrolytic fluids in the ear lobe and hence creating a sense of imbalance and dizziness. The current is governed by the Faraday’s law of induction.