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A circular coil with radius R = 8.0 cm has 15 turns of wire. The magnetic induction field in the center of the loop is 6.0 X 10-4 T. Find current in the loop.
The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 10-5 T.
Use the Biot-Savart law for currents to analyze the contributions of segments 1 and 5 to the magnetic field at point P.
Consider a flat circular current loop of radius R carrying current I. Chose the X axis to be along the axis of the loop, with the origin at the center.
The Earth's magnetic field is essentially that of a magnetic dipole. If the field near the North Pole is about 1.0x10^-4 T.
State the meaning of permeability, write down the expression for the permeability of free space, and indciate how it was developed from the Biot-Savart Law.
A constant current I flows in the loop. Use the Biot-Savart Law to calculate the H -field along the z-axis.
If this right angle bend lies at the origin and the wire carrying the incoming current lies on the negative y-axis.
Mechanical weathering is most effective in cold regions and chemical weathering is most effective in warm, moist regions.
A straight current-carrying (108 amps) wire makes an angle of 30 deg. with a .269T uniform magnetic field.
Imagine a small cylindrical permanent magnet floating above a superconducting tin disk bathed in liquid helium at around 1.2 K.
Water vapor, methane, nitrous oxide, ozone and chlorofluorocarbons (CFCS) absorb infrared radiation and add to the insulating effect of CO2.
A coaxial cable consists of a wire of radius 'a' surrounded by a concentric conducting sleeve of inner radius 'b' and outer radius 'c'.
A thick slab extending from z=-a to z=+a carries a uniform volume current J=Jx (fig). Find the magnetic field, as a function of z, both inside and outside.
Two long, parallel conductors, separated by 10.0 cm, carry currents in the same direction. The first wire carries current I1 = 5.00 A and the second carries I2
Two parallel wires, each carrying a current of I = 1.8 A, are shown in the figure below, where d = 7.1 cm. The current in wire 1 is in the opposite direction.
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