0
Electromagnetic waves result from acceleration or deceleration of charged particles. Charged particles moving at a constant velocity create a magnetic field according to the left hand rule* (lines of magnetic force wrap around the path of moving charges) but do not create radiation. Whenever the velocity changes, causing a kink in the lines of the electric field, an electromagnetic wave is propagated from the path at the speed of light.
Electromagnetic waves are named so, because, the propagated electric E field is always accompanied by a propagated magnetic H field perpendicular to it. Both fields are in phase with each other. Along directions of radiation, parts of it may be re-absorbed and converted back to an electric current in a conductor. That's how radio waves are received.
*The left hand rule is illustrated by curling the fingers of your left hand and pointing your thumb. The thumb points in the direction of charged particle motion and the curled fingers wrap around that path and show the direction of the lines of the magnetic field.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What are the two ways to generate Electricity?
Mechanical (generator) and Chemical (battery)
What are two ways a generator can be cooled?
Air and hydrogen gas can be pumped through
What are two ways a generator can cool?
Air and hydrogen gas can be pumped through
How do you make a mini generator?
There are an unlimited number of ways you could make a mini generator. You could use fan power for example.
What are two ways that a generator can be cooled?
Air and hydrogen gas can be pumped through
How many ways are there to turn a generator?
There are typically two ways to turn a generator: manually by hand or through an external power source such as an engine or motor, which in turn spins the generator shaft to produce electricity.
How do you use a nx generator?
Give 2 ways you can show respect to fellow students or employees
Can you name two ways to use a icosahedron?
two ways to use it is to use it as a soccer ball and use it as a golf ball
What are two ways orginisims use nutrients from food?
What are the two ways organisms use nutrients from food?
What tone generator is used in a Korg TRITON keyboard?
All Korg TRITON keyboards use Korg's HI Synthesis tone generator. Each keyboard can be upgraded in a number of ways and as a result, they are very popular with musicians.
What are two ways people use resource in leaf?
Two ways that people use leaves as a resource is by composting for gardens and mulch for landscaping.
What are two ways you can change a generator to generate more electricity?
Increase the rotational speed of the generator by using a more powerful prime mover like a larger engine or turbine. Increase the strength of the magnetic field within the generator by adding more coils of wire or using stronger magnets.
