Electric Field and Field Lines
Physics ⇒ Electricity and Magnetism
Electric Field and Field Lines starts at 9 and continues till grade 12.
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See sample questions for grade 10
A negative point charge is placed in a uniform electric field. In which direction will the force on the charge act relative to the field?
Describe the pattern of electric field lines between two parallel plates, one positively charged and one negatively charged.
Describe what happens to the electric field strength as you move farther from a point charge.
Explain why electric field lines never cross each other.
If a positive test charge is placed in the electric field of a negative charge, in which direction will it move?
If the distance between two point charges is doubled, what happens to the electric field at a point midway between them?
If the electric field at a point is zero, what can you say about the net force on a test charge placed at that point?
If two like charges are placed near each other, how do their electric field lines interact?
Which of the following best describes the pattern of electric field lines around a single positive point charge?
(1) Radially inward
(2) Radially outward
(3) Circular
(4) Parallel lines
Which of the following best represents the direction of the electric field at a point near a negative charge?
(1) Away from the charge
(2) Towards the charge
(3) Perpendicular to the charge
(4) Circular around the charge
Which of the following is NOT a property of electric field lines?
(1) They never cross each other.
(2) They are denser where the field is stronger.
(3) They always form closed loops.
(4) They start from positive and end at negative charges.
Which of the following is the correct formula for the electric field due to a point charge Q at a distance r?
(1) E = Q/r
(2) E = kQ/r2
(3) E = kQ/r
(4) E = Q/r2
A uniform electric field is represented by _______ field lines.
The direction of the electric field at a point is defined as the direction of the force on a _______ test charge placed at that point.
The electric field due to a point charge decreases as the _______ of the distance from the charge increases.
The number of electric field lines per unit area passing through a surface is called _______.
True or False: Electric field lines can never intersect each other.
True or False: The closer the electric field lines are to each other, the stronger the electric field in that region.
True or False: The electric field inside a conductor in electrostatic equilibrium is zero.
True or False: The electric field is a vector quantity.
