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 positive test charge is placed in an electric field. In which direction will it move?
Calculate the force experienced by a 2 × 10-6 C charge placed in an electric field of 5 × 104 N/C.
Calculate the magnitude of the electric field at a distance of 0.2 m from a point charge of +3.0 × 10-6 C in vacuum. (Take k = 9 × 109 N·m2/C2)
Describe the electric field at the midpoint between two equal positive charges separated by a distance d.
Describe what happens to the electric field strength if the distance from a point charge is doubled.
Explain why electric field lines never cross each other.
Explain why the electric field inside a hollow conducting sphere is zero.
If the electric field at a point is 0.5 N/C and a charge of 4 C is placed at that point, what is the force on the charge?
If the electric field at a point is directed towards the left, what can you say about the sign of the source charge?
State Coulomb’s law and explain how it relates to the concept of electric field.
