Physics
Grade-8
Easy
Question
Choose the correct statement from the following statements given:
- The electric force is always repulsive in nature.
- The electric force doesn’t depend upon the medium between the charges.
- The electric force is the weakest fundamental force in nature.
- The electric force depends on the distance between the charges.
Hint:
Coulomb's law calculates the magnitude of the force F between two point charges, q1 and q2, separated by a distance r. F=k|q1q2|r2. k=8.988×109N⋅m2C2≈8.99×109N⋅m2C2.
The correct answer is: The electric force depends on the distance between the charges.
The electric force depends on the distance between the charges according to columbs law.
Electric force is dependent on q1, q2 directly
Electric force is indirectly proportional to the square of the distance in between two charges.
Related Questions to study
Physics
If we increase the magnitude of the two charges the electric force_____________.
If we increase the magnitude of the two charges the electric force_____________.
PhysicsGrade-8
Physics
If the electric field strength due to a charged sphere at a point is 2 N/C, then find the magnitude of the charge placed at a point where the electric force acting due to the charged sphere is 12N.
If the electric field strength due to a charged sphere at a point is 2 N/C, then find the magnitude of the charge placed at a point where the electric force acting due to the charged sphere is 12N.
PhysicsGrade-8
Physics
Which one of the following is a vector quantity?
Which one of the following is a vector quantity?
PhysicsGrade-8
Physics
If a charged sphere is exerting a force of 18N on a charge of 2C at a point, then find the electric field strength at that point.
If a charged sphere is exerting a force of 18N on a charge of 2C at a point, then find the electric field strength at that point.
PhysicsGrade-8
Physics
If the electric field strength due to a charged sphere at a point is 3 N/C, then find the force acting on a charge of 2C placed at that point.
If the electric field strength due to a charged sphere at a point is 3 N/C, then find the force acting on a charge of 2C placed at that point.
PhysicsGrade-8
Physics
The electric force acting between two charges doesn’t depend upon:
The electric force acting between two charges doesn’t depend upon:
PhysicsGrade-8
Physics
Which of the given physical quantities is/are vector? Choose the most suitable option.
Which of the given physical quantities is/are vector? Choose the most suitable option.
PhysicsGrade-8
Physics
The unit of the charge is_________.
- The SI unit of length is meter.
- The SI unit of force is Newton.
The unit of the charge is_________.
PhysicsGrade-8
- The SI unit of length is meter.
- The SI unit of force is Newton.
Physics
The electric force acting between two charges depends upon:
The electric force acting between two charges depends upon:
PhysicsGrade-8
Physics
If a charged sphere is exerting a force of 8N on a charge of 4C at a point, then find the electric field strength at that point.
If a charged sphere is exerting a force of 8N on a charge of 4C at a point, then find the electric field strength at that point.
PhysicsGrade-8
Physics
A test charge may be of any magnitude.
A test charge may be of any magnitude.
PhysicsGrade-8
Physics
The S.I. unit of electric field strength is __________.
The S.I. unit of electric field strength is __________.
PhysicsGrade-8
Physics
A test charge is always taken ________ and ____________.
A test charge is always taken ________ and ____________.
PhysicsGrade-8
Physics
A ________ charge shows the direction of electric force at a point due to a charged body.
- A test charge is a charge with a magnitude so small that placing it at a point has a negligible affect on the field around the point.
- A positive test charge is a unit positive charge which is used to determine the strength and direction of an electric field.
A ________ charge shows the direction of electric force at a point due to a charged body.
PhysicsGrade-8
- A test charge is a charge with a magnitude so small that placing it at a point has a negligible affect on the field around the point.
- A positive test charge is a unit positive charge which is used to determine the strength and direction of an electric field.
Physics
The electric force ___________ on the medium between the charges.
- K= 1/4πε
- The value of k depends on the electric permittivity of the medium (ε).
- And the electric permittivity of a medium (ε) depends on the nature of the medium.
- Therefore, the value of K is different for different medium.
- Hence, the electrostatic force depends on the medium between the two charges.
The electric force ___________ on the medium between the charges.
PhysicsGrade-8
- K= 1/4πε
- The value of k depends on the electric permittivity of the medium (ε).
- And the electric permittivity of a medium (ε) depends on the nature of the medium.
- Therefore, the value of K is different for different medium.
- Hence, the electrostatic force depends on the medium between the two charges.