1928

Physics Electrostatics Level: High School

A parallel plate capacitor of capacitance Co has plates of area A with separation d between them . When it is connected to a battery of voltage Vo , it has charge of magnitude Qo on its plates . While it is connected to the battery the space between the plates is filled with a material of dielectric constant 3 . After the dielectric added , Find the magnitude of the charge on the plates and the potential difference between them .



1927

Physics Electrostatics Level: High School

If C = 50 nF , determine the equivalent capacitance for the combination shown in the figure at ‘click here’ .



1926

Physics Electrostatics Level: High School

Point charges q and Q are positioned as shown in the figure at “click here” . If q = +2.0 nC , Q = -2.0 nC , a = 3.0 m , and b = 4.0 m , What is the electric potential difference , VA - VB ?



1925

Physics Electrostatics Level: High School

Points A [at (2,3) m] and B [at (5,7) m] are in a region where electric field is uniform and given by E = (4i + 3J) N/C . What is the potential difference VA – VB ?



1924

Physics Electrostatics Level: High School

Gauss’ theorem

Charge of uniform density (20 nC/m^2) is distributed over a cylinder surface (radius = 1.0 cm) , and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of -12 nC/m^2 . Determine the magnitude of the electric field at a point 4.0 cm from the symmetry axis of the two surfaces .



1923

Physics Electrostatics Level: High School

Gauss’ theorem

A uniform linear charge density of 4.0 nC/m is distributed along the entire x axis . Consider a spherical (radius = 5.0 cm) surface centered on the origin . Determine the electric flux through this surface .



1922

Physics Electrostatics Level: High School

If a = 3.0 mm , b = 4.0 mm , Q1 = 60 nC , Q2 = 80 nC , and q = 24 nC in the figure at ‘click here’ , what is the magnitude of the total electric force on q ?



1921

Physics Electrostatics Level: High School

If Q = 16 nC , a = 3.0 m , and b = 4.0 m , what is the magnitude of the electric field at point P shown in at figure at “click here” ?



1920

Physics Electrostatics Level: High School

A charge of 50 nC is uniformly distributed along the y axis from y = 3.0 m to y = 5.0 m . What is the magnitude of the electric field at the origin ?



1897

Physics Electrostatics Level: High School

Two point charge are separated by 6 cm . the attractive forces between them is 20 N . Find the force between them when they are separated by 12 cm .



1312

Physics Electrostatics Level: High School

The work on joules required ot carry a 6.0 C charge from a 5.0 V equipotential surface to a 6.0 V equipotential surface and back again to the 5.0 V surface is ?
W = 0 ( As electrostatic force is conservative and W.D depends on the initial and final position . Since the change is brouhgt back to the same equipotential surface , W.D is zero )



1311

Physics Electrostatics Level: High School

During a lightning discharge, 30 C of charge move through a potential difference of 1.0 x 10^8 V in 2.0 x 10^-2 s . What is the energy released by the lightning bolt ?



1310

Physics Electrostatics Level: High School

The potential difference between two points is 100 V . If 2 C is transported from one of these points to the other . What is the magnitude of the work done ?



1309

Physics Electrostatics Level: High School

If 500 J of work are required to carry a charge particle between two points with a potential difference of 40 V, What is the magnitude of the charge on the particle ?



1116

Physics Electrostatics Level: High School

A proton accelerates from rest as it falls through a potential difference . If the proton acquires a speed of 2 x 10 to the 6th m/s .

(a) How much kinetic energy did it acquire

(b) Through how large a potential difference did it fall ?

Displaying 301-315 of 453 results.