Three charges are arranged in a line, as shown in Figure 1.
Draw an arrow at point
Aussie Maths & Science Teachers: Save your time with SmarterEd
Three charges are arranged in a line, as shown in Figure 1.
Draw an arrow at point
(Insert image here)
→ The electric field direction will be from the positive charge to the negative charge.
→The
(Insert image here)
Two large charged plates with equal and opposite charges are placed close together, as shown in the diagram below.
A distance of 5.0 mm separates the plates. The electric field between the plates is equal to 1000 N C
Calculate the voltage difference between the plates. (2 marks)
Voltage difference is
Figure 2 shows two equal positive stationary point charges placed near each other.
Sketch on Figure 2 the shape and direction of the electric field lines. Use at least eight field lines. (2 marks)
--- 0 WORK AREA LINES (style=lined) ---
→ Field lines must not touch.
→ Fields will repel one another.
The electric field between two parallel plates that are 1.0 × 10
Calculate the voltage between the plates? (2 marks)
--- 4 WORK AREA LINES (style=lined) ---
The diagram below shows the electric field lines between two charges of equal magnitude.
The best description of the two charges is that the
→ The field lines show the charges are experiencing a repulsion force hence they must be the same charge.
→ The direction of the field lines are away from the charges so they must be positive charges.
The diagram below shows two parallel metal plates with opposite charges on each plate.
Which one of the following graphs best shows the electric field strength,
→ The strength of the electric field is uniform between parallel plates. Hence its magnitude remains constant.
The diagram below shows the electric field lines between four charged spheres:
Which of the following correctly identifies the type of charge (+ positive or – negative) that resides on each of the spheres
A. | ||||
B. | ||||
C. | ||||
D. |
→ Electric field lines travel away from positive charges and towards negative charges.
→ Therefore,
Two point charges,
On the straight line between the charges
--- 7 WORK AREA LINES (style=lined) ---
→ The point where the force on a charged particle
→ Let
→
The diagram represents the electric field around a negative charge.
If the magnitude of the charge were doubled, which diagram would best represent the new electric field?
→ The density of the field lines corresponds to the strength of the electric field surrounding the point charge.
→ Hence a stronger charge produces a stronger field and so the field lines become denser.
Two charged plates are initially separated by a distance as shown in the diagram.
The potential difference between the plates remains constant.
Which of the graphs best represents the change in electric field strength as the distance between the two plates is increased?
→The electric field strength and distance vary according to the equation:
→ Thus
→ The electric field lines are defined by the direction of force on a positive charge.
→ A positive charge will experience a repulsive force from the positive plate and attractive force to the negative plate.
The diagram shows two parallel charged plates
What is the magnitude of the electric field between the plates in
Outline the similarities and differences between the effects of electric fields and gravitational fields on matter. In your answer, refer to the definitions of these fields. (4 marks)
--- 12 WORK AREA LINES (style=lined) ---
Differences in effects:
→ Electric fields are regions in space where a force acts on a charged particle whereas gravitational fields are regions in space where a force acts on an object with mass due to the influence of another object with mass.
→ Electric field strength is defined by
→ Gravitational field strength is defined with
→ Electric fields can produce forces of repulsion (due to like charges) while gravitational fields can only produce forces of attraction.
Similarities:
→ Both fields are able to produce forces of attraction.
→ Electric and gravitational fields vary in strength due to magnitudes of charge and mass respectively.
→ The strength of both fields is inversely proportional to the distance of separation from a point charge or mass.
→ Gravity is a significantly weaker fundamental force compared to electromagnetism.
Differences in effects:
→ Electric fields are regions in space where a force acts on a charged particle whereas gravitational fields are regions in space where a force acts on an object with mass due to the influence of another object with mass.
→ Electric field strength is defined by
→ Gravitational field strength is defined with
→ Electric fields can produce forces of repulsion (due to like charges) while gravitational fields can only produce forces of attraction.
Similarities:
→ Both fields are able to produce forces of attraction.
→ Electric and gravitational fields vary in strength due to magnitudes of charge and mass respectively.
→ The strength of both fields is inversely proportional to the distance of separation from a point charge or mass.
→ Gravity is a significantly weaker fundamental force compared to electromagnetism.