Question
The diagram shows a shaded area where the direction of a magnetic field is into the page.
A beam of β-particles enters the field as shown.
In which direction is the beam of β-particles deflected as they enter the magnetic field?
A into the page
B out of the page
C down the page
D up the page
Answer/Explanation
Ans: C
Question
A wire passes between the poles of a horseshoe magnet. There is a current in the wire in the
direction shown, and this causes a force to act on the wire.
Three other arrangements, P, Q and R, of the wire and magnet are set up as shown.
Which arrangement or arrangements will cause a force in the same direction as the original arrangement?
A P, Q and R
B P and Q only
C P only
D R only
Answer/Explanation
Ans: D
Question
The diagram shows a current-carrying wire. The wire is at 90° to a magnetic field. The direction of
the magnetic field is into the page.
A force acts on the wire due to the current and the magnetic field.
In which direction does the force act?
A into the page
B out of the page
C towards the bottom of the diagram
D towards the top of the diagram
Answer/Explanation
Ans: D
Question
An electron moves into a uniform magnetic field.
The arrow shows the initial direction of motion of the electron.
The direction of the magnetic field is into the plane of the page (away from you).
In which direction does a force act on the electron when it enters the magnetic field?
A. into the page
B. out of the page
C. towards the bottom of the page
D. towards the top of the page
Answer/Explanation
Ans: C
Question
A current-carrying coil is placed in a magnetic field.
view from above
Which effect does the coil experience?
A a change in shape
B a change in weight
C a resultant force
D a turning effect
Answer/Explanation
Ans: D