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What is the unit of Planck’s Constant?

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Answer:

Planck’s constant, which is used to determine the relationship between the energy contained within a single photon of an emission which is a part of electromagnetic radiation and the frequency of the same radiation from the source, has its SI unit as Joule-Second (J.S).
As it is the product of multiplication between two scalar quantities, energy and time, the planck’s constant is also a scalar product.
The plank’s constant has its quantitative representation amounting to approximately 6.626176 x 10-34 joule-seconds.
The exact value enables it to be converted into metre-kilogram-second units.
On the other hand, The CGS unit of planck’s constant is erg.