Physics
Grade-8
Easy
Question
Which of the given physical quantities is/are a vector? Choose the best suitable option.
- Electric force
- Electric field strength
- Electric charge
- Electric Force and Electric field strength
Hint:
A vector quantity is defined as the physical quantity that has both directions as well as magnitude.
The correct answer is: Electric Force and Electric field strength
A vector quantity is defined as the physical quantity that has both directions as well as magnitude.
The electric is a quantity that is measured in vectors. The ratio of force per unit test charge is known as the electric field. Electric field is a vector quantity since force is a vector quantity.
The electric force is a vector,
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The concept of electric field lines was discovered by:
The concept of electric field lines was discovered by:
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The figure shows some of the electric field lines corresponding to an electric field. The figure suggests that the electric field is:
The figure shows some of the electric field lines corresponding to an electric field. The figure suggests that the electric field is:
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Select the correct statements about electric field lines.
I. Two electric field lines can cross each other.
II. They start from a positive charge and may end at a negative charge.
III. Electric field lines form closed loops.
Select the correct statements about electric field lines.
I. Two electric field lines can cross each other.
II. They start from a positive charge and may end at a negative charge.
III. Electric field lines form closed loops.
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The electric field lines due to a single negative charge.
a. 
, b. 
c. 
d. 
are represented by which one of the following figures?
The electric field lines due to a single negative charge.
a. , b.
c. d.
are represented by which one of the following figures?
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Which of the following information do the electric field lines provide?
Which of the following information do the electric field lines provide?
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The electric field strength at a point depends upon:
The electric field strength at a point depends upon:
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Which of these is false about the electric field lines?
Which of these is false about the electric field lines?
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A test charge may be of any magnitude.
A test charge may be of any magnitude.
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Which of the following information is provided by the electric field lines?
Which of the following information is provided by the electric field lines?
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For a negative charge, the field line move _____ the charge.
For a negative charge, the field line move _____ the charge.
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The direction of force and the direction of electric field strength is always opposite.
The direction of force and the direction of electric field strength is always opposite.
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The field line moves towards the positive charge.
The field line moves towards the positive charge.
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A test charge is always taken ________ and ____________.
A test charge is always taken ________ and ____________.
PhysicsGrade-8
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The field lines do not _____ with each other.
The field lines do not _____ with each other.
PhysicsGrade-8
Physics
The ________ at a point on the field lines gives the direction of the electric field.
The ________ at a point on the field lines gives the direction of the electric field.
PhysicsGrade-8
