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Each of these wires is long and straight, and carries the current I either into or out of the page, as shown.”
A, pointing out of the screen. Find the magnitude and direction of the net magnetic field at point P.
Draw a sketch showing clearly the direction of motion of the charge, the lines of magnetic force and the direction of the magnetic force on the ion.
Explain succintly the role diffraction plays in the ultimate resolution of an imaging system.
If there is no electric field and the particle enters the magnetic field in a direction perpendicular to the lines of flux show that the trajectory.
Write the (real) electric and magnetic fields for a monochromatic plane wave of amplitude Eo, frequency w.
When Thomson experimented with his apparatus, he noticed that in one run, the electron beam dropped 1.35 cm.
Farmers resort to spraying fruit trees with water before a frost to protect the fruit from freezing.
Find H, B, M inside the conductor and discern between diamagnetic and paramagnetic materials.
Find the self inductance per unit length on a hollow cable where the current only runs on the surface of the outer conductor.
The relatively high resistivity of dry skin, about 1×10^6 O·m, can safely limit the flow of current into deeper tissues of the body.
Two infinite grounded parallel conducting planes are separated by a distance d. A point charge q is placed between the planes. Use the reciprocation theorem.
What about if the sphere has a total charge Q on its inner and outer surfaces?
Define equivalent resistance. Derive expressions for equivalent resistances for series and parallel arrangement of resistances.
A charge of 1 µC is distributed uniformly along the circumference of a circle with a radius of 30 cm. How much external energy is required to bring a charge.
An electron is placed at a point (0, +5X10^-10m) in the electric field produced in I. Find the force on the electron.
Imagine that you would like to design a parallel plate capacitor that could store 1 J of electrical energy in the electric field between its plates.
A Solenoid has 704 turns, a length of 33.3 cm, a radius of 3.85 cm. If it carries 5.61 A, calculate the magnetic field at an axial point located 20.2 cm.
When the magnetic field through a loop changes, currents run in the loop in such a way as to make a new magnetic field in the opposite direction.
Find the magnitude and direction of the electric field at the point (a/2,a/2), mid-way between the +q and -q charges.
Four identical point charges (q = + 10.0 micro coulomb) are located on the corners of a rectangle. The dimensions of the rectangle are L = 60.0 cm.
What is the change in the potential energy of the charge-field system?Through what potential difference does the charge move?
A long, straight wire carries a current of 48 A. The magnetic field produced by this current at a certain point is 7.0E-5 T. How far is the point from the wire?
A piece of copper wire has a resistance per unit length of 6.45E-3 omega/m. The wire is wound into a thin, flat coil of many turns that has a radius.
A wire 2.80 m in length carries a current of 5.00 A in a region where a uniform magnetic field has a magnitude of 0.390 T.