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 11
A point charge of +2 μC is placed at the origin. What is the direction of the electric field at a point on the positive x-axis?
A positive test charge is placed in an electric field. In which direction will it move?
Describe the pattern of electric field lines around an isolated positive point charge.
Describe what happens to the electric field strength as the distance from a point charge increases.
A charge of 1 C experiences a force of 10 N at a certain point. What is the electric field at that point?
A point charge of +2 μC is placed at the origin. What is the direction of the electric field at a point on the positive x-axis?
A positive test charge is placed in an electric field. In which direction will it move?
Calculate the electric field at a distance of 0.5 m from a charge of -3 × 10-6 C. (k = 9 × 109 N·m2/C2)
Electric field lines between two like charges will:
(1) Attract each other
(2) Repel each other
(3) Intersect at the midpoint
(4) Form closed loops
Which of the following best describes the direction of the electric field at a point?
(1) The direction in which a positive test charge would move
(2) The direction in which a negative test charge would move
(3) The direction of the force on an electron
(4) The direction of the force on a neutron
Which of the following best represents the electric field due to a negative point charge?
(1) Radially outward
(2) Radially inward
(3) Circular
(4) Tangential
Which of the following is NOT a property of electric field lines?
(1) They originate from positive charges
(2) They can cross each other
(3) They end on negative charges
(4) Their density represents field strength
Fill in the blank: The tangent to an electric field line at any point gives the ________ of the electric field at that point.
The electric field at a point is defined as the ________ per unit ________.
The electric field at the center of a uniformly charged ring is ________.
The electric field due to a point charge decreases as the ________ of the distance from the charge.
If the electric field at a point is zero, does it necessarily mean that the electric potential at that point is also zero?
True or False: The electric field inside a conductor in electrostatic equilibrium is zero.
True or False: The electric field is a scalar quantity.
True or False: The number of electric field lines emerging from a charge is proportional to the magnitude of the charge.
