Question 17
Original source text (layout and all choices are preserved in the source panel below):
A physics student conducting an experiment on charges. The diagram below shows
the set-up made by the student.
Metal sphere X has a positive charge and metal sphere Y is uncharged.
The student moved sphere X close to Y but the spheres do not touch. He then earthed
sphere Y by touching it with a wire which was then removed. Sphere X is then moved
away from Y.
What is the final distribution on sphere Y?
A. negative all over the surface
B. negative on the left and positive on the right
C. positive all over the surface
D. positive on the left and negative on the right
A physics student conducting an experiment on charges. The diagram below shows
the set-up made by the student.
Metal sphere X has a positive charge and metal sphere Y is uncharged.
The student moved sphere X close to Y but the spheres do not touch. He then earthed
sphere Y by touching it with a wire which was then removed. Sphere X is then moved
away from Y.
What is the final distribution on sphere Y?
A. negative all over the surface
B. negative on the left and positive on the right
C. positive all over the surface
D. positive on the left and negative on the right