Physics Electrostatics Level: High School
A 5.0 g sphere on 1.0-m-long thread has a charge of 100 nC. If it hangs at an angle of 10 degree to the vertical , what is the strength of the electric field ?
Physics Electrostatics Level: High School
A plastic rod that has been charged to -15 nC touches a metal sphere . Afterwards , the rods change is o nC.(a) What kind of charged particle was transformed between the rod and the sphere , and in which direction ? That is , did it move from the rod to the sphere or from the sphere to the rod ?
(b) How many charged particles were transferred ?
Physics Electrostatics Level: High School
A student gives a 0.50 m x 0.50 m sheet of tin foil a charge of 75 nC . What is the magnitude of the electric field close to the sheet ?
Physics Electrostatics Level: High School
What are the strength and direction of the electric field at the position indicated by the dot as per the figure at “click here” ?
Physics Gravitation Level: High School
Mass m experiences a gravitational force of magnitude 10 N . On the surface of planet X , the gravitational force is 30 N . What is the magnitude of the gravitational field on the surface of the planet X ?
Physics Electrostatics Level: High School
What is the net electric force on charge B as per the figure at “click here” ?
Physics Electrostatics Level: High School
Consider a small positive text charge located on an electric field line at same point , such as point P as shown in the figure at "click here" . In the direction of the velocity and / or acceleration of the text change along this line ? Discuss ?
Physics Electrostatics Level: High School
Why can lines of two force never cross ?
Physics Electrostatics Level: High School
Draw the electric field lines surrounding the negative charges a distance L apart ?
Physics Electrostatics Level: High School
The earth produces an inwardly directed electric field of magnitude 150 V/m near its surface(a) What is the potential of earth’s surface relative to V = 0 at r = infinite ?
(b) If the potential of earth is chosen to be zero, what is the potential at infinity ?(Ignore the fact that positive charge in the ionosphere approximately cancels the Earth’s net charge ; how would affect this in your answer ?)
Physics Electrostatics Level: High School
An electron acquires 16.4 x 10^-16 J of kinetic energy when it is accelerated by an electric field from plate A to plate B . what is the potential difference between the plates and which plate is at higher potential ?
Physics Electrostatics Level: High School
How much work is needed to move a -7.0 microC charge from ground to a point whose potential is +6.00 V higher ?
Physics Electrostatics Level: High School
A 15.0cm diameter nonconducting sphere carries a total charge of 12.0 micro C . distributed uniformly throughout its volume . Graph the electric field E as a function of the distance r from the centre of the sphere from r = 0 to r = 30 cm .
Physics Electrostatics Level: High School
A solid metal sphere of radius 3.00m carries a total charge of -3.50 microC. What is the magnitude of the electric field at a distance from the sphere center of(a) 0.15m
(b) 2.90m,
(c) 3.10m
(d) 6.00m ?
How would the answer differ if the sphere were (e) a thin shell , or (f) a solid nonconductor uniformly charged throughout ?
Physics Electrostatics Level: High School
Define gravitational flux in analogy to electric flux . Are there “sources” and “sinks” for the gravitational field as there are for the electric field ? Discuss .