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The current in wire 1 is in the opposite direction of wire 2. Find the direction and magnitude of the net magnetic field at points A, B, and C.
A straight conducting wire of circular cross section, radius a, has a resistance R per unit length and carries a constant current I.
Starting from Ampere’s law, calculate the self inductance of the coil, assuming that the cross sectional area of the coil is sufficiently small.
Calculate the e.m.f., the current and the torque, and hence verify that the mechanical power supply balanced the electric power produced.
We learned that the magnitude of the electric field at a point a distance r from an infinite straight wire with a uniformly distributed positive charge.
Use Gauss' law to find E inside the slab and close to its surfaces, far from the edges of the slab.
Do the calculation again for the hypothesis that the nuclear charge is uniformly distributed over the surface of a spherical shell of radius R.
Considering the gravitational force on the ball and assuming the sheet extends far vertically and into and out of the page.
The electrical field in a particular space is E = (X + 1.2)1 N/C with x in meters. Consider a cylindrical Gaussian surface of radius 16 cm that is coaxial with
A plastic sheet of thickness t has a uniform free charge density, +?, embedded inside, and also one surface has a surface charge of -s.
Construct a Gaussian cylindrical surface outside both the rod and the shell to calculate the electric field outside the shell.
A hollow spherical shell carries charge density p = k / r^2, in the region a<=r<=b. Find the electric field in i) the region a< r< b.
Gauss' law can tell us how much charge is contained within a Gaussian surface. Can it tell us where inside the surface it is located? Explain.
Find the magnitude of the electric field at all points in space both inside and outside the slab, in terms of x, the distance measured from the central plane.
What is the total charge on the inner sphere? (Express your answer as a multiple of Q. For example, if the total charge is 0.2Q, then input 0.2).
What is the surface charge density on the inner and outer surface of the shell?
A metal sphere of radius R, carrying charge q, is surrounded by a thick concentric metal shell (inner radius a, outer radius b).
Calculate the electric field (magnitude and direction) in terms of q and the distance r from the common centre of the two shells.
What is a capacitor? Describe different types of capacitors and derive expressions for their capacitances.
Find the energy stored in the electrostatic field of a uniformly charged (with density p) spherical shell of inner radius a and outer radius b.
Four point charges q = +3.6 uC are arranged in a square of edge length 2.0 cm. What is the electric potential at the center of the square?
Two charges, -18 and +4.0 microcoulombs, are fixed in place and separated by 3.0 meters. At what spot along a line through the charges is the net electric field
An equilateral triangle has sides of 0.12 meters. Charges of -8.6, +8.0 and +1.6 micro Coulombs are located at the corners of the triangle.
Two point particles, 1 with charge +8*10^-9C and the other with charge -2*10^-9C, are separated by 4m.
A particle with a charge -2.3*10-8C charge is moved from X=3.5cm on the x axis to y=3.5cm on the y axis.