10) A proton is moving in a constant magnetic field, see figure, what is the direction of the force on the proton? Velocity proton- B-Field
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- As in the figure, two electrons are moving on the same plane with velocities of v=3x10^6 m/s and v'=1x10^6 m/s in the direction perpendicular to each other at a certain moment. The distance between them is 0.8x10-10 m.What is the magnetic force exerted by the above load on the load below, in pN (pico Newton)?An electron moves in a circle of radius 2.3 cm inside the magnetic field of a solenoid. The motion of electron is perpendicular to the solenoid axis. If the solenoid has 100 turns/cm and the speed of electron is 0.0460 c (c is speed of light), find the current in the solenoid.السؤال Magnetic field Produced by the presence of electrically charged particles, and gives rise to the electric force. الاجابات True False
- A loop of wire lies in the plane of the page. A constant magnetic field (same at all locations) is directed out of the page. If you turn the loop slightly out of the plane, what direction is the induced current? Explain.A wire with length 1m moved with velocity 0.5 m/s made angle 45 degree with x-axis, it is moved in a uniform magnetic field 0.2T along y-axis, what is the motional emf in this wire?In detail, find the magnetic field of a ring of radius R with current i at somepoint d away from the center of the ring (Draw a figure).
- The force experienced by a particle of charge q moving with a velocity v in a uniform magnetic field B is given by F = q (v x B) then: a. q is always parallel to v and B b. v is always perpendicular to F and B c. F is always perpendicular to v and B d. F is always perpendicular to q and BOne of the following is not a source of magnetostatic fields (Answer needed with explanation):(a) A de current in a wire(b) A permanent magnet( c) An accelerated charge(d) An electric field linearly changing with time( e) A charged disk rotating at uniform speedWhen changes occur in a magnetic field that intersects a conductor, what results? Select one: a. Induced voltage. b. Increased conductor resistance. c. An overload condition. d. A short circuit.
- An electron starts from rest. There are two charged plates, 12 cm apart, which an electric field strength of 175 N/C, that accelerate an electron into a magnetic field, which has a field strength of 0.260T (refer to the diagram below) (a) What is the speed of the electron as it leaves the plates/ enters the magnetic field (b) What is the magnetic force acting on the electron when it is in the magnetic field (c) What is the radius of the path the electron takes in the magnetic field (Draw the path the electron takes/ state initial direction of turn)The figure below shows a wire that forms a semicircle of radius R=10. 0 cm and two straight segments each of length 7.0 cm. The wire carries a current i = 42.0 mA.(a) What are the magnitude, and(b) direction of the magnetic field at point C?A current carrying conductor placed in a magnetic field experience a force, is it true for generators? Select one: O True O False