Which of the following will create a magnetic field? Choose allthat apply. 1 Ane
ID: 1678496 • Letter: W
Question
Which of the following will create a magnetic field? Choose allthat apply.
1
Aneutron that is speeding up from 1000 m/s to 1200 m/s.
An ion moving in a circle while travelingat a constant speed of 20 in/min.
An electron moving at a constant velocityof 60 mph due north.
A neutrino that is slowing down from 500km/h to 400 km/h.
A proton that is stationary.
Which of the following will emit an EM wave? Choose all thatapply.
1
Aneutron that is stationary.
A neutrino that is speeding up from 1000m/s to 1200 m/s.
An electron that is slowing down from 500km/h to 400 km/h.
A proton moving at a constant velocity of60 mph due north.
An ion moving in a circle while travelingat a constant speed of 20 in/min.
Explanation / Answer
Question 1: To create a magnetic field we need to have moving charges. The only charges that are moving are B) and C). No B field: A) & D): Neutron and neutrino are neutral, hence no magnetic field. E) Proton is not moving Question 2: To create an EM wave, we need to have accelerating charges. C) and E) have charges that are accelerating and are the answers C): Electron is decelerating E): Ion is moving in a circle -> centripetal acceleration. No EM wave: A) & B): Neutron and neutrino are neutral D: Proton has constant linear velocity and is not accelerating.
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