Which of these diagrams represent the electric field around a positive point charge?
An electric field is created by two parallel plates. At which of the following points is the electric field the strongest?
A
B
C
D
Its is the same everywhere
An electric field due to a positive charge is represented by the diagram.
At which of the following points is the electric field strongest in magnitude?
A
B
C
D
It is the same everywhere
A negative charge in an electric field experiences a force accelerating it due south.
What is the direction of the electric field?
north
west
east
south
Two positive charges, equal in magnitude, are separated as shown below.
In which location would the electric field strength be zero?
1
2
3
4
If the distance between two charges are doubled, the force of attraction between the charges would be:
one half of the original force
the same
double the original force
one quarter of the original force
4 times the original force
Two point charges q1 and q2 are situated at a distance d. There is no point in-between them where the electric field is zero.
What can we deduce?
The charges are unequal in magnitude
The charges are identical in polarity (both + or both -)
There is no such point
The charges are opposite in polarity (one +, one -)
Electric field intensity is a ________________
scalar quantity
dimensionless quantity
vector quantity
all of the above
The magnitude of the electric field at point A is 𝓍.
What is the electric field at point B, in terms of 𝓍?
3𝓍
9𝓍
𝓍
1/9 𝓍
1/3 𝓍
The force experienced by a −6 C charge in an external field is 60 N to the left. The electric field intensity will be:
10 N.C-1 to the left
10 N.C-1 to the right
6 N.C-1 to the left
6 N.C-1 to the right
An electron is placed in an electric field with an intensity of
1 × 104 N.C-1. The force that the electron experiences in this field is ...
0,625 × 1013 N
0,625 × 1015 N
1,6 × 1015 N
1,6 × 10−15 N
Compare the Gravitational Field and the Electric Field produced by a proton.
The Electric Field is stronger and is in the same direction as the Gravitational Field.
The Electric Field is stronger and in the opposite direction of the Gravitational Field.
The Gravitational Field is stronger and is in the same direction as the Electric Field.
The Gravitational Field is the same strength as the Electric Field.
Fields that act on objects with masses are:
gravitational fields
force fields
magnetic fields
electric fields
The mass of a planet is twice that of the Earth. Its radius is half that of the radius of the Earth. The gravitational field at the surface of the Earth is g. The gravitational field at the surface of the planet is
g
2g
4g
8g
Two objects, one with a mass of m and one with a mass of 4m are attracted to each other by a gravitational force. If the force on 4m is F, what is the force on mass m in terms of F?