<span>The advantage of using an electromagnet rather than a regular magnet is that an electromagnet is stronger and you can control the power of the magnet. </span>
A transformer is an electrical device that transfers energy between two or more circuits through electromagnetic induction. Transformers are mainly used to increase or decrease voltage in power lines or electric power applications. So your answer would be D. transformer
acceleration = velocity/time
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Explanation:
Wavelength in an emission spectrum,
The energy of an electron is given by :
Where
h is the Planck's constant
c is the speed of light
For 435 nm, the energy of the electron will be :
We know that
So,
So, E = 2.86 eV
The energy of the electron dropping from one energy level is 2.86 eV. We know that,
From the given energy levels :
So, the transition must be from E₅ to E₂. Hence, this is the required solution.