1. In a system design the electrons are accelerated from rest through a potential difference of...

1. In a system design the electrons are accelerated from rest through a potential difference of 250 V. The electrons travel along a curved path because of the magnetic force exerted on them, and the radius of the path is measured to be 5 cm long. If the magnetic field is perpendicular to the beam what is the linear speed of the electrons, what is the angular speed of the electrons and what is the magnitude of the magnetic field in this system, respectively?

A. 9.4 x 106 m/s, 188 x 106 rad/s, 107.5 x 10-6 T
B. 2.4 x 103 m/s, 2.61 x 105 rad/s, 13.6 x 10-4 T
C. 6.8 x 107 m/s, 1.82 x 107 rad/s, 22.7 x 10-3 T
D. 1.2 x 107 m/s, 214 x 107 rad/s, 9.4 x 10-4 T

2. What is the direction of magnetic force created by a moving particle?
A. Same direction with the velocity of the particle
B. Same direction with the magnetic field
C. Direction of the vectoral product of charge of the particle and the magnetic field
D. Direction of the vectoral product of velocity of the particle and the magnetic field

What is the magnetic force created by a current carrying wire? (Please choose two corrert answers)

A. Different than zero on a closed loop
B. Zero on a closed loop
C. Depends on the angle between the length vector and magnetic field lines
D. Depends on the angle between the length vector and velocity vector

What did Oersted discovered?

A. Magnetic force created by a closed loop
B. Magnetic force of a charged particle
C. Compass needle is deflected by a current carrying wire
D. Magnetism of a charged particle

Solutions

Expert Solution

genius_generous answered 1 year ago

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