Answer :
It is a physical field occupied by a charged particle on another particle in its surrounding .The magnitude of electric field will be -0.0241 MN/C.
What is electric field?
A physical field called an electric field surrounds electrically charged particles and attracts or repels all other charged particles nearby. It can also refer to the physical field surrounding a system of charged particles. Electric charges and time-varying electric currents are the building blocks of electric fields. The electromagnetic field, one of the four fundamental interactions (also known as forces) of nature, manifests itself in both electric and magnetic fields.
The electric force in an electric field is given by the equation,
[tex]E = \frac{F}{Q}[/tex]
Since electric field is balanced by the weight of the plastic sphere, the electric force is equal to weight of the sphere.
[tex]F = mg[/tex]
So the equation becomes
[tex]E = \frac{mg}{Q}[/tex]
Putting the value from the question,
m = 0.0074 kg
Q = (-3.0) Nc
g (gravitational acceleration) = 9.8 m/s^2
So, we get
[tex]E = \frac{(9.8)(0.0074)}{(-3.0)}[/tex]
[tex]E = -0.0241 MN/C[/tex]
Hence, the electric field is -0.0241 MN/C.
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