Table of Contents
Which of the following is correct representation of electric field lines?
A negative charge has an inward electric field for the reason that it attracts positive charges. Because electric field lines start from infinity where the positive charge is supposed to be existing and end at a negative charge. Thus, option (B) is the correct answer.
How are electric field lines represented?
Since electric field is a vector quantity, it can be represented by a vector arrow. For any given location, the arrows point in the direction of the electric field and their length is proportional to the strength of the electric field at that location.
What is true about electric field lines?
Electric field lines never intersect. In an uniform electric field, the field lines are straight, parallel and uniformly spaced. The electric field lines can never form closed loops, as line can never start and end on the same charge. These field lines always flow from higher potential to lower potential.
Which of the following statement is not true about electric field lines?
Electric field lines start from positive charge and end at negative charge. Two electric field lines can never cross each other. Electrostatic field lines do not form any closed loops. Electric field lines cannot be taken as continuous curve.
Which among the following Cannot possibly represent electric field lines?
Positive charge tends to move normally away from the conductor i.e starts or ends only at 90° to the surface of the conductor. Thus, the lines of force are parallel and normal to the surface of conductor. So curve (b) cannot represent electrostatic field lines.
What does electric field lines surrounding a charge represent?
The electric field is a vector field around a charged particle. It represents the force that other charged particles would feel if placed near the particle creating the electric field. If the point charge is positive, field lines point away from it; if the charge is negative, field lines point toward it.
What are electric field lines Class 12?
An electric field line is an imaginary line or curve drawn from a point of an electric field such that tangent to it (at any point) gives the direction of the electric field at that point.
What does the relative density of electric field lines represent?
Answer: Field lines give us information about the direction of E, but also about its. magnitude, since the relative density of field lines is a measure of the relative. strength of the electric field.
Where do electric field lines begin and end?
Lines begin and end only at charges (beginning at + charges, ending at – charges) or at Infinity. Lines are closer together where the field is stronger. Larger charges have more field lines beginning or ending on them. Electric Field lines never cross (since E must point in a definite direction unless it is zero).
Where do electric field lines end?
Electric field lines either originate on positive charges or come in from infinity, and either terminate on negative charges or extend out to infinity.
Which statement is wrong about lines of electric field?
Electric field lines does not forms closed loop as line can never start and end on the same charge.
Which of the following is not a characteristic of electric field lines?
Field lines are always normal to conducting surface and they do not form closed loops. Field lines may have break, they do not exist inside a conductor.
Which statement is false for a perfect conductor?
Since the electric field out of a conductor is perpendicular to the surface. Therefore, it will not have component along the surface of the conductor. So, there will be no work done in moving the conductor along the surface.
Which of the following statement is correct if ∫ ▒ E dS 0 over a surface then?
If Фs E . dS = 0 then q = 0, i.e., net charge enclosed by the surface must be zero. Hence all other charges must necessarily be outside the surface.
Which among the curves shown in the following figures Cannot represent electrostatic field lines give reason?
(b) Figure (b) too cannot represent electrostatic field lines as electrostatic field lines do not start from a negative charge. Electric field lines always traverse from a region of positive charge to a region of negative charge.
Which among the Curvesshown in Cannot possibly represent electrostatic field lines Why?
(a) The field lines showed in (a) do not represent electrostatic field lines because field lines must be normal to the surface of the conductor. This is because the field lines emerge from the positive charges and repel each other.
Which of the following statement is correct the electric field at a point is?
Electric field at a point is continuous if there is no charge at that point. And the field is discontinuous if there is charge at that point. So both options (b) and (c) are correct.
What would crossed electric field lines indicate?
What would crossed electric field lines indicate? A negative test charge experiences a force to the right as a result of an electric field.
Which describes an electric field vector and an electric field line?
Which describes an electric field vector and an electric field line? The vector is tangent to the field line. If a positive test charge is located on an electric field line, what is the direction of the force on the test charge? The force vector is tangent to the field line, in the direction of the field line.
What are electric lines?
An electric line of force is an imaginary continuous line or curve drawn in an electric field such that tangent to it at any point gives the direction of the electric force at that point. the direction of a line of force is the direction along which a small free positive charge will move along the line.
What do you mean by field lines?
A field line is a graphical visual aid for visualizing vector fields. It consists of a directed line which is tangent to the field vector at each point along its length. In fluid mechanics field lines showing the velocity field of a fluid flow are called streamlines.
What is the relation between electric field strength and density of field lines?
In fact, the density of the electric field lines is proportional to the strength of the electric field! Figure 18.18 Electric field lines from two point charges. The red point on the left carries a charge of +1 nC, and the blue point on the right carries a charge of –1 nC.
What is electric field lines write any four properties of field lines?
Properties of an Electric Field Field lines never intersect each other. They are perpendicular to the surface charge. The field is strong when the lines are close together, and it is weak when the field lines move apart from each other. The number of field lines is directly proportional to the magnitude of the charge.
What is the relation between the density of lines of force and the electric field strength?
Electric field strength is proportional to the density of lines of force i.e., electric field strength at a point is proportional to the number of lines of force cutting a unit area element placed normal to the field at that point.
