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 9
A charge of 4 C is placed in an electric field of 3 N/C. What is the force on the charge?
A point charge of +1 C is placed at the origin. What is the direction of the electric field at a point on the positive x-axis?
A point charge of +5 C is placed at a point. What is the direction of the electric field at a point 1 m away from the charge?
A positive test charge is placed in an electric field. In which direction will it move?
A test charge of +1 C is placed in an electric field of 20 N/C. What is the force on the test charge?
Describe the pattern of electric field lines between two unlike charges placed close to each other.
Describe what happens to electric field lines when two like charges are placed near each other.
Describe what happens to the electric field lines near a sharp point on a charged conductor.
Explain why a charged conductor has no electric field inside it in electrostatic equilibrium.
Explain why electric field lines never cross each other.
If a charge of +2 C experiences a force of 10 N at a point, what is the electric field at that point?
If the electric field at a point is 100 N/C and a charge of -2 C is placed at that point, what is the force on the charge?
If the electric field at a point is directed to the left, in which direction will a negative test charge move?
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?
State the SI unit of electric field.
What happens to the electric field strength if the distance from a point charge is doubled?
What is an electric field?
What is the electric field at a distance of 2 m from a point charge of 3 C? (Take k = 9 × 109 N·m²/C²)
What is the value of Coulomb's constant (k) in SI units?
Write the formula for the electric field (E) due to a point charge (q) at a distance (r) in vacuum.
