Q1. Which line, A to D, correctly describes the trajectory of charged
... PhysicsAndMathsTutor.com ...
... PhysicsAndMathsTutor.com ...
Problem Set 4
... hydrogen like atom in the presence of an electric field upto second order in Hel given in problem 23 in terms of an infinte sum involving all the eigenstates of the unperturbed hydrogen atom. Estimate the shift using only the n = 2 term ( n is the principal quantum number)in electron volts for the s ...
... hydrogen like atom in the presence of an electric field upto second order in Hel given in problem 23 in terms of an infinte sum involving all the eigenstates of the unperturbed hydrogen atom. Estimate the shift using only the n = 2 term ( n is the principal quantum number)in electron volts for the s ...
1
... A cloud of positive charge has a volume charge density of P = Po rlR where r is the distance from the center of a sphere of radius R and Po is a constant. Find the magnitude of the electric field E at a point inside the sphere at distance r < R. Ii'J ::::'f:l t\V\ ~ l\ ~M ~. ...
... A cloud of positive charge has a volume charge density of P = Po rlR where r is the distance from the center of a sphere of radius R and Po is a constant. Find the magnitude of the electric field E at a point inside the sphere at distance r < R. Ii'J ::::'f:l t\V\ ~ l\ ~M ~. ...
Electric Motors
... A torque, τ, is a force that causes an object to rotate. In this equation, F is the force applied and r is the distance from the pivot point where the force is applied. If r and F are perpendicular to each other, the torque is maximized. If they are parallel to each other, the torque is zero. You c ...
... A torque, τ, is a force that causes an object to rotate. In this equation, F is the force applied and r is the distance from the pivot point where the force is applied. If r and F are perpendicular to each other, the torque is maximized. If they are parallel to each other, the torque is zero. You c ...
File
... that certain stones would attract and magnetize iron. • Small slivers of the stone were found to align themselves with the North Pole. • Chinese were the first to use magnets for ...
... that certain stones would attract and magnetize iron. • Small slivers of the stone were found to align themselves with the North Pole. • Chinese were the first to use magnets for ...
Electromagnetic Induction
... circuit, into a magnetic field. • When the wires moves up, the current is in one direction. • When the wires moves down, the current is in the opposite direction. • When the wire is held stationary or is moved parallel to the magnetic field lines, there is no current. ...
... circuit, into a magnetic field. • When the wires moves up, the current is in one direction. • When the wires moves down, the current is in the opposite direction. • When the wire is held stationary or is moved parallel to the magnetic field lines, there is no current. ...
this only works for your right hand
... • A proton is in an accelerator going 5X106 m/s. It encounters a magnetic field of 0.4T and is moving at an angle of 300 with respect to the field. • What is the direction and magnitude of the force on the proton? • What would these be if it were an electron? • F = 1.6X10-13 N upward if field is to ...
... • A proton is in an accelerator going 5X106 m/s. It encounters a magnetic field of 0.4T and is moving at an angle of 300 with respect to the field. • What is the direction and magnitude of the force on the proton? • What would these be if it were an electron? • F = 1.6X10-13 N upward if field is to ...
Electromagnetism - hrsbstaff.ednet.ns.ca
... -magnetic force tends to slow down rotation of armature ...
... -magnetic force tends to slow down rotation of armature ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.