Which best describes the electric field created by a positive charge?
2 answers:
Answer:
Its rays point away from the charge.
Explanation:
The electric field due to a point charge is given by :
Where
k is the electrostatic constant
q is the point charge
r is the distance from charge particle
It is clear that the electric field is directly proportional to the charge and inversely proportional to the distance from charge particle.
There are two types of charged particle i.e. negative and positive charge. For a positive charge, the direction of electric field points away from it and for a negative charge, the direction of electric field points towards it.
Hence, the correct option is (c).
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Answer : The wavelength of photon is,
Explanation : Given,
Energy of photon =
Formula used :
As,
So,
where,
= frequency of photon
h = Planck's constant =
= wavelength of photon = ?
c = speed of light =
Now put all the given values in the above formula, we get:
Conversion used :
Therefore, the wavelength of photon is,