18 Questions
What do electric field lines represent?
The direction of the force acting on a positive charge
In a uniform electric field, what is true about the electric force?
It is the same everywhere in the field
What happens when a charged particle is fired at right angles to a uniform electric field?
It accelerates and follows a parabolic shape
How can you calculate the work done by moving a charged particle in a uniform field?
$F \times d$
Which equation helps in calculating the electric field strength?
$F = EQ$
How are uniform and radial electric fields different in terms of force?
Uniform fields depend on distance between charges for force
Which of the following statements about force fields is correct?
Force fields are formed during the interaction of masses, static charges, or moving charges.
What type of field is formed during the interaction of charges?
Electric field
Which of the following statements about gravitational fields is correct?
Gravitational fields are formed during the interaction of masses.
How can the strength of a force field be represented in a field line diagram?
The distance between field lines represents the strength of the field.
Which of the following forces follow an inverse-square law?
Gravitational force and electric force
What is the main difference between gravitational fields and electric fields?
Gravitational fields are always attractive, while electric fields can be either attractive or repulsive.
According to Coulomb's law, the force between two point charges is directly proportional to which of the following?
The product of their charges
In Coulomb's law, if two charges have different signs, what type of force will be present between them?
Attractive
Why are satellites that orbit quickly required to work together for constant coverage?
To maintain coverage as they orbit rapidly
Which subatomic particle characteristic results in electrostatic forces being much greater than gravitational forces?
Charge being larger than mass
When treating air as a vacuum in calculations, what assumption can be made for a charged sphere?
The charge acts at the center of the sphere
What determines the strength of the force between two point charges in a vacuum according to Coulomb's law?
The distance squared between the charges
Learn about force fields and how they are represented as vectors and diagrams with field lines. Understand the concept of non-contact forces and the direction of fields based on vector representation.
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