electric charges and fields
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1
What is the SI unit of electric charge?
Coulomb (C)
2
What is the charge of a single electron?
C
3
What is the charge of a single proton?
C
4
What law states that like charges repel and unlike charges attract?
Coulomb's law
5
What is the formula for Coulomb’s law?
6
What is the value of Coulomb’s constant () in vacuum?
7
What is an electric field?
A region around a charged object where another charge experiences a force
8
What is the formula for electric field intensity ()?
9
What is the electric field due to a point charge?
10
What is the direction of the electric field due to a positive charge?
Radially outward
11
What is the direction of the electric field due to a negative charge?
Radially inward
12
What is the unit of electric field?
Newton per Coulomb (N/C) or Volt per meter (V/m)
13
What is electric flux?
The total number of electric field lines passing through a given surface
14
What is the SI unit of electric flux?
Volt-meter (Vm)
15
What is Gauss's law?
The total electric flux through a closed surface is equal to
16
What is the formula for Gauss's law?
17
What is the value of the permittivity of free space ()?
18
What is a conductor in electrostatics?
A material that allows free movement of charge
19
What is an insulator in electrostatics?
A material that does not allow free movement of charge
20
What is the principle of superposition of electric fields?
The net electric field at a point is the vector sum of all individual fields acting at that point
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