Physics Electrostatics Level: Misc Level
If you place a proton at point A in the electric field shown what will happen? What if you place an electron at point B? If you place a proton at location A and another at location B and then let go, which one, if either, accelerates more quickly? Explain.
Physics Electrostatics Level: Misc Level
What capacitance should a capacitor have if it is to store 3x 10-3 joules of energy when connected to a 12 volt battery?
Physics Electrostatics Level: Misc Level
An electrical capacitor of 1.5 micro-farands is connected to a 6 volt battery. How much potential energy is stored in the capacitor?
Physics Electrostatics Level: Misc Level
Find the equivalent capacitance between points A and B for the three capacitors in parallel in the following?
Physics Electrostatics Level: Misc Level
The earth has an electric field with a magnitude of approximatly 100 v/m near its surface.What is the potential difference between a point on the ground and a point on the same level as the top of the Washington Monument (555 ft high).
Physics Electrostatics Level: Misc Level
Nerve cells are long, thin cylinders along which electrical disturbances (nerve impulses) travel. The cell membrane of a typical nerve cell consists of an inner and outer wall separated by a distance of . 10 um. The electric field within the cell membrane is 7.0x10 to the 5th N/C.Approximating the cell membrane as a parallel-plate capacitor, determine the magnitude of the charge density on the inner and outer cell walls.
Physics Electrostatics Level: Misc Level
If a capacitor has 3.77 uC of charge on it and an electric field of 1.82 kV/mm is desired if they are separated by 4.21 mm of air, what must each plate,s area be?
Physics Electrostatics Level: Misc Level
A charge Q creates an electric potential of+ 259 V at a distance of 14.3 cm. What is Q?
Physics Electrostatics Level: Misc Level
What is the speed of a 3.31 keV electron?
Physics Electrostatics Level: Misc Level
An electric field of 710 V/m is desired between two parallel plates 17.7 mm apart. How large a voltage should be applied?
Physics Electrostatics Level: Misc Level
A uniform electric field of magnitude 261 V/m is directed in the negative x direction. A-11.0 uC charge moves from the origin to the point (x,y)=(17.3 cm,53.9 cm). What was the change in the potential energy of this charge?
Physics Electrostatics Level: Misc Level
A lightning flash transfers 4.08 C of charge and 3.03 MJ of energy to the Earth. Between what potential difference did it travel?
b.An electron starting from rest acquires 4.90 ke V of kinetic energy in moving from point A to point B. How much kinetic energy would a proton acquire, starting from rest at B and moving to point A?
Physics Electrostatics Level: Misc Level
[GRR2 16.P.059.]-/1 points No Response/ Show Details
In a uniform electric field of magnitude E, the field lines cross through a rectangle of area A at an angle of 43.0% with respect to the plane of the rectangle.What is the magnitude of the flux through the rectangle?Answer in terms of E and A.
Physics Electrostatics Level: Misc Level
[GRR2 16.P.057.]-/1 points No Response/ Show Details
An object with a charge of 0.820 uC is placed at the center of a regular icosahedron with 20 equivalent surfacees. What is the electric flux through one surface of the icosahedron?
Physics Electrostatics Level: Misc Level
[GRR2 16.P.044.]-/3 points No Response/ Show Details
A horizontal beam of electrons initially moving at 2.2 x 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates as shown in the diagram.The magnitude of the field is 2.50 104 N/C.
(a) What is the direction of the field between the plates?
1.up
2.down
3.right
4.left
(b) What is the charge per unit area on the plates?
(c) What is the vertical deflection d/of the electrons as they leave the plates?
