Physics Electrostatics Level: High School
A parallel plate capacitor consist of 2 rectangular plates of dimensions 12cm by 20 cm , with a separation of 2mm b3etween the plates. If the plates are connected to the terminals of a 15 V battery determine the surface charge density of each plate .
Physics Electrostatics Level: High School
Determine the work required to assemble four identical 15*10^-6 charges at the corners of a rectangle of dimensions 20 cm by 30 cm .
Physics Electrostatics Level: High School
A charge of 5.0 pC is distributed uniformly throughout the colume between concentric spherical surfaces having radii of 1.0 cm and 3.0 cm . A point charge of -2.0 pC is placed at the center of the spherical distribution . Determine the electric field at distances of 0.5cm . 10cm , from the center of the spherical distribution .
Physics Electrostatics Level: High School
Identical point charges Q are placed at two certices of an equilateral triangle of 30 cm sides . A third charge , -2Q is placed at the third vertex . If Q= 20*10^-6 find the magnitude of the total electrostatic force exerted on either of the positive point charges .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Two parallel wires are separated by a distance d = 0.07669 m and carry currents 11 and 12 given by 0.001692 A and 0.0009046 A , respectively . Find the perpendicular distance from the second wire where the magnetic field is zero . ( Hint: This is some point between the two wires )
Physics Magnetism,Magnetic Effects Of Current Level: High School
A current I = 0.005859 A flows through a wire. Find the magnetic field B at a perpendicular distance r = 0.0929 m from the wire .
Physics Magnetism,Magnetic Effects Of Current Level: High School
A 5824 turn coil carries a current I and has radius R = 0.03696 m . If the magnetic field at the centre of the coil is B= 0.000122 Telsa , determine the magnitude of the current ,
Physics Magnetism,Magnetic Effects Of Current Level: High School
An N = 36 turn circular coil of radius r = 0.0005579 m carries a current I = 0.006765 A . The coil’s normal makes an angle ö = 46.53 degree with respect to a uniform magnetic field of magnitude B . The coil experiences a torque r = 0.0008442 N ,. Find B .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Magnetism
A charge q = 7.458e-07 coulombs is moving with velocity v = 6.245 m/s at an angle theta = 72.18 degrees with respect to a magnetic field B = 4.203e-05 Tesla. What is the magnitude of the force acting on this charge ?
Physics Electrostatics Level: High School
A cubic box of side a , oriented as shown at “click here” , contains an unknown charge . The vertically directed electric field has a uniform magnitude E at the top surface and 2E at the bottom surface . How much charge Q is inside the box ?1.Q encl = eo Ea^2
2.Q encl = 2 eo Ea^2
3.Insufficient information
4.Q encl = 0
5.Q encl =1/2 eo E a^2
6.Q encl =3 eo E a^2
Physics Electrostatics Level: High School
An electric field of magnitude 20000 N/C and directed upward perpendicular to the Earth’s surface exists on a day when a thunderstorm is brewing . A truck that can be approximated as a rectangle 6.3 m by 2.5 m is traveling along a road that is inclined 8 degree relative to the ground.Determine the electric flux through the bottom of the truck, Answer in units of N.m^2/C.
Physics Electrostatics Level: High School
An electron , starting from rest , is accelerated by a uniform electric field of 80000 N/C that extends over a distance of 9cm . The charge and the mass of an electron are 1.6 x 10^-19 C and 9.11 x 10^-31 kg respectively. Find the speed of the electron after it leaves the region of uniform electric field Answer in units of m/s .
Physics Electrostatics Level: High School
Given symmetrically placed rectangular insulators with uniformly charged distribution of equal magnitude as shown in the figure at “click here” At the origin , the net field Enet is1. aligned with the negative y- axis
2. along the 315 degree direction
3. along the 60 degree direction.
4. along the 225 degree direction.
5. aligned with the positive x-axis.
6. along the 30 degree direction .
7. aligned with the positive y-axis.
8. along the 135 degree direction .
9. along the 45 degree direction.
10. aligned with the negative x-axis.
Physics Electrostatics Level: High School
The diagram at “click here” depict three electric field patterns . some of these patterns are physically impossible. Assume these electric field patterns are due to static electric charges outside the regions shown . Which electrostatic field patterns are physically possible ?1.(b) only
2.(a) and (b)
3.(c) only
4.(a) and (c)
5.(a) only
6.(b) and (c)
Physics Electrostatics Level: High School
Consider a conducting sphere with radius R and charge +Q , and a conducting spherical shell with inner radius 2R , outer radius 3R and net charge +4Q. its image is shown at “click here”Select the electric field vs radial distance diagram [E(r) function] which describes this situation from the images which is shown at “click here”.
