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 12
A 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 negative test charge is placed in an electric field. In which direction will it move?
A point charge of +5 μC is placed at the center of a cube. What is the net electric field at the center of the cube?
A point charge of -1 μC is placed at the origin. What is the direction of the electric field at a point on the positive y-axis?
A 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 negative test charge is placed in an electric field. In which direction will it move?
A point charge of +5 μC is placed at the center of a cube. What is the net electric field at the center of the cube?
A point charge of -1 μC is placed at the origin. What is the direction of the electric field at a point on the positive y-axis?
Which of the following arrangements will produce a uniform electric field?
(1) Two parallel plates with equal and opposite charges
(2) A single point charge
(3) Two concentric spheres
(4) A ring of charge
Which of the following best describes the pattern of electric field lines around two equal but opposite point charges placed close to each other?
(1) Parallel straight lines
(2) Radial lines diverging from both charges
(3) Curved lines from positive to negative charge
(4) Circular loops around each charge
Which of the following is NOT a property of electric field lines?
(1) They never intersect.
(2) They are denser where the field is stronger.
(3) They can form closed loops.
(4) They start on positive charges and end on negative charges.
Which of the following is the correct relationship between electric field (E), force (F), and charge (q)?
(1) E = F/q
(2) E = q/F
(3) E = F × q
(4) E = F/q2
A uniform electric field is represented by field lines that are ________ and ________.
The density of electric field lines is greatest where the field is ________.
The electric field at a point is defined as the ________ per unit ________ at that point.
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 there are no charges nearby?
True or False: The direction of the electric field at a point is the direction of the force that a positive test charge would experience at that point.
True or False: The electric field due to a dipole at a point on its axial line is twice as strong as at a point on its equatorial line at the same distance.
True or False: The electric field inside a conductor in electrostatic equilibrium is zero.
