Answer:
The magnitude of induced emf is 5.4 V
Explanation:
Given:
Magnetic field T
Area of loop
Time take to reduce loop to zero sec
To find induced emf we use faraday's law,
Induced emf is given by,
Here minus sign shows lenz law, for finding magnitude of emf we ignore it.
Where
Put the value of flux and find induced emf,
V
Therefore, the magnitude of induced emf is 5.4 V
Answer:
i have to say whether its correct or wrong yep
Answer:
No.
<em>Electromagnetic waves do not need a medium to travel through. </em>
Explanation:
Wave: A wave is a disturbance which travel through a medium and transfer energy from one point to another without causing any permanent displacement of the medium itself.
Waves are classified into two
(i) Mechanical Wave:These are waves that require a material medium for their propagation. E.g water wave, wave generated in a spring, and sound wave.
(ii) Electromagnetic wave: These are waves that do not require a material medium for their propagation. E.g light rays, radio wave, x-rays and gamma rays.
<em>Thus from the above explanation, electromagnetic waves do not need a medium to travel through. </em>