3 years ago

Which of the following utilize electromagnetic induction to operate?

1 answer:

7 0

The first two in a way use indiction. A generator causes an induced voltage on the output terminals by rotating a coil in a magnetic field (Faraday's Law of magnetic induction). A telephone microphone has a membrane that is excited (moved) by sound waves and on the back of this membrane is a magnet. The magnet is placed inside the core of a coil of wire that has a voltage induced in it by the changing magnetic flux through the loop as it vibrates.
A turbine is moved by fluids or air, and while they can drive generators they themselves do not require induction to operate

You might be interested in

A book is sliding along a desk top. Because the book is in motion ,you know that the forces acting on the book are A. Balanced B

Virty [35]

Just because the book is moving doesn't tell you anything about the forces on it, or even whether there ARE any.

Just look at Newton's first law of motion, and this time, let's try and THINK about it too. It says something to the effect that any object continues in constant, uniform MOTION ..... UNLESS acted on by an external force.

4 0

3 years ago

The record for the highest speed achieved in alaboratory for a

Ira Lisetskai [31]

Answer:

0.000234 seconds

Explanation:

Since the row is 0.15m, its radius of rotation must be 0.15 / 2 = 0.075 m

We can start by calculating the angular speed of the rod:

$\omega = \frac{v}{r} = \frac{2010}{0.075} = 26800 rad/s$