|
ID/Type |
Web Link or WA Question Code |
Local download |
Launch from browser |
Description |
|
G20-1 |
A Comparative
Guide to Gravitational and Electric Forces, Fields, and Energy |
elec-energy-01.iwp |
elec-energy-01.iwp |
A proton moves initially to the left in a uniform electric field. Assuming no forces are acting other than the electric force, what is the initial velocity of the proton? The position of the proton in centimeters is given as an output. |
|
G20-2 |
A Guide to
Electrostatic Concepts and Relationships |
epotential-01b.iwp |
epotential-01b.iwp |
At t = 0 , a charged particle is released in a uniform electric field at the given position. The electric field is produced by 2 charged plates on opposite sides of the screen, 20 cm apart. The electric field is represented by the green lines and the equipotentials by the gray lines. The direction of the electric force on the particle is indicated. Charge in units of e (1 e = 1.6E-19 C) is given as an input. Mass in units of u (1 u = 1.66E-27 kg) is given as an output. For easy visual identification, positive charges show as red and negative charges as blue.
The potential difference may be reversed by making the potential of the left plate negative. This will also reverse the colors of the plates. The red plate is always at higher potential than the blue plate. The potential at the current position of the particle is shown as an output.
The bar graphs in the yellow window show the electrical potential energy and the work done by the electric field on the particle as it moves. |
|
G20-3 |
Energy Conservation
in Circuits with Capacitors |
capacitor-charge.iwp |
capacitor-charge.iwp |
A simple circuit contains a battery, resistor, capacitor, and switch in series. The switch is initially open and the capacitor is fully discharged. Run the applet to close the switch. The lines represent the potential differences across the battery (red), resistor (green), and capacitor (blue) as a function of time. The red, green, and blue bars provide another representation of how the potential differences change as a function of time. The sum of all three potential differences is 0 at any time as a result of conservation of energy. |
|
G20-3 |
Energy Conservation
in Circuits with Capacitors |
capacitor-discharge.iwp |
capacitor-discharge.iwp |
A simple circuit contains a resistor, capacitor, and switch in series. The switch is initially open and the capacitor is fully charged. Run the applet to close the switch. The lines represent the potential differences across the resistor (green) and capacitor (blue) as a function of time. The green and blue bars provide another representation of how the potential differences change as a function of time. The sum of the potential differences is 0 at any time as a result of conservation of energy. |
|
L25-1 |
L25-03 |
efield-plot-03.iwp |
efield-plot-03.iwp |
Two charges (red and blue) are positioned on the x-axis and produce an electric field in the space surrounding them. Note the following:
The blue charge is always +1.0 C and is positioned at 3.0 m. |
|
L25-1 |
L25-04 |
efield-plot-03.iwp |
efield-plot-03.iwp |
Two charges (red and blue) are positioned on the x-axis and produce an electric field in the space surrounding them. Note the following:
The blue charge is always +1.0 C and is positioned at 3.0 m. |
|
L25-2 |
L25-01 |
efield-plot-03.iwp |
efield-plot-03.iwp |
Two charges (red and blue) are positioned on the x-axis and produce an electric field in the space surrounding them. Note the following:
The blue charge is always +1.0 C and is positioned at 3.0 m. |
|
L25-2 |
L25-02 |
efield-plot-03.iwp |
efield-plot-03.iwp |
Two charges (red and blue) are positioned on the x-axis and produce an electric field in the space surrounding them. Note the following:
The blue charge is always +1.0 C and is positioned at 3.0 m. |
|
E.20.01c |
APB-20-01-01c |
epotential-01b.iwp |
epotential-01b.iwp |
At t = 0 , a charged particle is released in a uniform electric field at the given position. The electric field is produced by 2 charged plates on opposite sides of the screen, 20 cm apart. The electric field is represented by the green lines and the equipotentials by the gray lines. The direction of the electric force on the particle is indicated.
Charge in units of e (1 e = 1.6E-19 C) is given as an input. Mass in units of u (1 u = 1.66E-27 kg) is given as an output. For easy visual identification, positive charges show as red and negative charges as blue.
The potential difference may be reversed by making the potential of the left plate negative. This will also reverse the colors of the plates. The red plate is always at higher potential than the blue plate. The potential at the current position of the particle is shown as an output.
The bar graphs in the yellow window show the electrical potential energy and the work done by the electric field on the particle as it moves. |
|
E.20.01c |
APB-20-01-03b |
epotential-01b.iwp |
epotential-01b.iwp |
At t = 0 , a charged particle is released in a uniform electric field at the given position. The electric field is produced by 2 charged plates on opposite sides of the screen, 20 cm apart. The electric field is represented by the green lines and the equipotentials by the gray lines. The direction of the electric force on the particle is indicated.
Charge in units of e (1 e = 1.6E-19 C) is given as an input. Mass in units of u (1 u = 1.66E-27 kg) is given as an output. For easy visual identification, positive charges show as red and negative charges as blue.
The potential difference may be reversed by making the potential of the left plate negative. This will also reverse the colors of the plates. The red plate is always at higher potential than the blue plate. The potential at the current position of the particle is shown as an output.
The bar graphs in the yellow window show the electrical potential energy and the work done by the electric field on the particle as it moves. |
|
E.20.01c |
APB-20-01-05bv3 |
epotential-01b.iwp |
epotential-01b.iwp |
At t = 0 , a charged particle is released in a uniform electric field at the given position. The electric field is produced by 2 charged plates on opposite sides of the screen, 20 cm apart. The electric field is represented by the green lines and the equipotentials by the gray lines. The direction of the electric force on the particle is indicated.
Charge in units of e (1 e = 1.6E-19 C) is given as an input. Mass in units of u (1 u = 1.66E-27 kg) is given as an output. For easy visual identification, positive charges show as red and negative charges as blue.
The potential difference may be reversed by making the potential of the left plate negative. This will also reverse the colors of the plates. The red plate is always at higher potential than the blue plate. The potential at the current position of the particle is shown as an output.
The bar graphs in the yellow window show the electrical potential energy and the work done by the electric field on the particle as it moves. |
|
E.20.01c |
APB-20-01-07bv2 |
epotential-02a.iwp |
epotential-02a.iwp |
A negative (blue) and a positive (red) particle are accelerated under the action of a uniform electric field. The masses and charges of the particles are given as outputs.
How do the magnitudes of the electric forces on the particles compare?
How do the accelerations of the particles compare?
How do the electric potential energy changes of the particles in moving through the same distance compare?
How does the work done by the electric field on the particles compare?
Do your answers above depend on the potential difference between the plates? |
|
E.20.01c |
APB-20-01-08b |
epotential-02c.iwp |
epotential-02c.iwp |
What initial velocity must the proton at the right plate have in order to reach the left plate with a velocity of 0? |
|
E.20.02b |
APB-20-02-05b |
epotential-02f.iwp |
epotential-02f.iwp |
How can you tell that there must be an external force acting on the particle? |
|
E.20.02b |
APB-20-02-04b |
epotential-02d.iwp |
epotential-02d.iwp |
A charged particle is acted on by two forces: 1) the force of the electric field set up between the plates, and 2) an external force. The position and velocity of the charge are given as outputs. Determine the direction and magnitude of the external force. |
|
E.20.02b |
APB-20-02-04c |
epotential-02d.iwp |
epotential-02d.iwp |
A charged particle is acted on by two forces: 1) the force of the electric field set up between the plates, and 2) an external force. The position and velocity of the charge are given as outputs. Determine the direction and magnitude of the external force. |
|
E.20.02b |
APB-20-02-08 |
epotential-02e.iwp |
epotential-02e.iwp |
A charged particle enters a uniform electric field at the bottom of the screen. |